The Second Missionary Journey

Have you ever made a good plan? Not a bad plan — a right, honest plan, the kind anyone would approve of. And it simply did not happen. The spot closed, the trip fell through, the team changed, your friend left. That is when it hurts the most, because you cannot even blame yourself.

That is more or less what happened to the apostle Paul. Once the Council of Jerusalem was over, he had an excellent idea: "Some time later Paul said to Barnabas, “Let us go back and visit the brothers in every town where we proclaimed the word of the Lord, to see how they are doing.”" (Acts 15:36). That was all it was — a follow-up visit to the churches from the first journey. There was nothing about Europe in that plan. Yet between leaving Antioch and arriving in Philippi, three things happened that Paul had not put on his schedule: a painful separation, two doors closed by the Holy Spirit Himself, and a vision in the middle of the night. Let us follow that route.

I — The route of the second journey

The initial plan was simple and belonged to both of them: Paul and Barnabas would travel again through the cities where they had preached and planted churches. Notice the apostle's care — he did not just want new ground; he wanted to know how those who had already believed were doing. A grounded disciple is what keeps a church standing.

Except the pair did not set out together. Barnabas wanted to take John Mark, the same one who, on the first journey, had left them in Perga and returned to Jerusalem (Acts 13:13). Paul did not agree: "Barnabas wanted to take John, also called Mark. But Paul thought it best not to take him, because he had deserted them in Pamphylia and had not accompanied them in the work." (Acts 15:37-38). The disagreement grew to the point that they parted from each other (Acts 15:39). Barnabas took Mark and sailed to Cyprus; Paul chose Silas and set out, commended by the brothers to the grace of God (Acts 15:40), and went through Syria and Cilicia, strengthening the churches (Acts 15:41).

What the text says and what men suppose

Here we need honesty, because many people tell this story with a certainty that the Bible does not give.

What the text says about John Mark: that he left them and returned to Jerusalem (Acts 13:13), and that Paul described him as the one who had not gone with them to the work (Acts 15:38). Full stop. No reason is revealed.

What men suppose: over the centuries, commentators have suggested travel fatigue, fear of the danger ahead, discomfort with the change of leadership on the team, homesickness, and even an illness contracted along the way. Each one proposed something different — which is the clearest sign that no one knows. These are human suppositions, not statements of Scripture. When the Bible is silent, the right thing to do is to be silent with it.

And about the separation: Luke does not say that Paul was right and Barnabas wrong, nor the other way around. He does not assign blame. Both sides can be understood: Barnabas was known as the man who bet on people — he was the one who introduced the newly converted Saul to the apostles when no one trusted him (Acts 9:27). Paul, for his part, was responsible for a dangerous mission and only had the past to judge by; he could not see the future. Both looked at the same young man and saw different things.

אב In the original — Greek. The word Acts 15:39 uses is παροξυσμός (paroxysmós) — from which our word "paroxysm" comes. The root means to sharpen, as one sharpens a blade: it is the friction that heats up and cuts. A detail that changes the reading: this very same word appears only one other time in the New Testament, and in a good sense — "And let us consider how to spur one another on to love and good deeds." (Hebrews 10:24). The same term that here separated two friends means, there, provoking someone toward good. Friction is not always sin; it depends on where it pushes.

🕊 Our reading. It is tempting to turn Acts 15:39 into an easy moral — "see? God separated the two on purpose to double the mission field." Scripture does not say that. It records the disagreement, records the result, and does not join the two things in a single sentence. What it shows is better: God brings good even out of what started crooked. And it shows Mark's outcome. Years later, imprisoned in Rome, it is Paul who writes: "Only Luke is with me. Get Mark and bring him with you, because he is useful to me in the ministry." (2 Timothy 4:11). The young man who once went back home ended up on the list of the apostle's fellow workers (Colossians 4:10; Philemon 24). If anyone tells you that you have ruined your chances for good, remember that name.

The map

Paul and Silas left Antioch of Syria, crossed Syria and Cilicia — Paul's homeland, the main highway between Syria and the West — and arrived at Derbe and Lystra. It was there that a young man named Timothy joined them, the son of a Jewish mother and a Greek father, well spoken of by the brothers (Acts 16:1-3). Notice: Paul lost one companion and God raised up another. The work never depended on a single name.

From there they went through Phrygia and Galatia, skirted Mysia, and went down to Troas. From there they crossed the Aegean Sea, passing through Samothrace to Neapolis, and went up to Philippi. Then came Amphipolis, Apollonia, Thessalonica, Berea — and, farther on, Achaia, with Athens, Corinth, and Cenchreae. The return trip was through Ephesus; they passed through Jerusalem and returned to Antioch of Syria (Acts 18:21, 22).

II — Change of plans

It was in the middle of this route that the strange part happened. Paul wanted to preach in the province of Asia — the western strip of Asia Minor, whose capital was Ephesus, a very wealthy region full of people. A perfect target. And the text says: "After the Holy Spirit had prevented them from speaking the word in the province of Asia, they traveled through the region of Phrygia and Galatia." (Acts 16:6).

Read that again, slowly. It was not the Romans who stopped them. It was not the Jews. It was not persecution, or lack of money, or illness. It was the Holy Spirit — stopping missionaries from preaching. If that sounds strange to you, it is because it really is.

They tried another direction: "And when they came to the border of Mysia, they tried to enter Bithynia, but the Spirit of Jesus would not permit them." (Acts 16:7). Two doors, two refusals. Notice that it is not stubbornness: Paul tried again. And it is not giving up: when the second way closed, he kept walking. "So they passed by Mysia and went down to Troas." (Acts 16:8) — a large, busy port city, with one of the best harbors on that sea, practically the key to trade between Asia and Europe. Except no one knew yet why they were there.

Then came the direction: "During the night, Paul had a vision of a man of Macedonia standing and pleading with him, “Come over to Macedonia and help us.”" (Acts 16:9). Twice the Spirit had said "no." Now, for the first time, came a "go."

אב In the original — Greek. The next verse holds a precious word: συμβιβάζω (symbibázo), in Acts 16:10 — concluding that the Lord was calling them to preach the gospel to them. The verb literally means to make things go together, to put the pieces together until they fit and form a conclusion. And it is in the present tense: it was not an instant flash, it was a conclusion taking shape as they talked. In other words: God gave the vision, and the team used the heads God gave them to understand what it meant and what to do about it. Divine direction does not switch off the believer's brain — it summons it.

Two things in this verse deserve attention. The first: the one who reaches the conclusion is the team, in the plural, not Paul alone in a corner. The second: notice the first-person plural — from there on Luke begins to write that they sought to set out. He joined the group. The one who wrote Acts was in the boat.

In Philippi — a Roman colony in northern Greece, a kind of miniature Rome, with Roman law and customs — there was no synagogue. On the Sabbath, Paul went to preach by a riverside, where there was a place of prayer, and there he met Lydia and other women (Acts 16:13-15). It was from a handful of people by the water's edge that the church in Philippi was born, the one that loved and supported Paul like no other (Philippians 4:15, 16). Hold on to that scene: the two closed doors were not taking anything away from Paul. They were saving Europe for him.

🏛 In the traces of history. Philippi really existed, and you can walk through it today. Systematic excavations of the site were conducted by the French School at Athens between 1914 and 1938, revealing the forum, the agora, the theater, a library, and the speakers' platform — the city Luke describes, in stone. An inscription found there records the name of Porphyrius, bishop of Philippi between 313 and 343, who commissioned the mosaics of a basilica dedicated to Paul. Almost three hundred years after that conversation by the riverside, there was still a church in the city.

III — Spiritual sensitivity

We come to the question that really matters: how did the Holy Spirit stop Paul?

The honest answer is: the text does not say. Acts records the fact, not the method. Throughout history, commentators have proposed three different things — a strong inner conviction, the word of a prophet on the team, or a direct revelation. Each one proposed his own, and none claims to know. Notice what this means: if the Bible wanted to teach us a fixed method, it would have described the method. It did not. No one can say that God spoke in an audible voice there, because it is not written.

And here it is worth disarming a dangerous idea: following God is not obeying without thinking. The Bible praises the exact opposite. The believers in Berea were called more noble-minded because they examined the Scriptures every day to see whether these things were so (Acts 17:11). And Paul, the same Paul of this lesson, wrote: "but test all things. Hold fast to what is good." (1 Thessalonians 5:21). God directs; the believer cooperates. He does not drag anyone along as one pulls an object — He leads people who decide to follow Him.

The four questions

How, then, does a 13-year-old teen discern God's direction in a real decision? Four questions, which apply to any situation:

1. Does the Bible say anything about this? If Scripture has already spoken, there is nothing to discern — there is something to obey. God does not lead anyone against His own Word.
2. Did I pray about this, or did I just decide and ask for a rubber stamp? "Commit your way to the LORD; trust in Him, and He will do it." (Psalm 37:5).
3. What do the more mature Christians who know me say? Parents, Sunday School teacher, pastor. Whoever only listens to himself has a weak counselor.
4. What is my real motivation? Many people want God's will so long as it matches their own. Honestly: do you want to find out, or do you want approval?

None of this works without intimacy. You recognize the voice of someone you spend time with. Jesus said: "My sheep listen to My voice; I know them, and they follow Me." (John 10:27). Recognizing His voice is not a magical gift — it is the fruit of walking together.

❤ For your life. A national survey of Brazilian students — PeNSE, by IBGE, 2024 edition, which heard from more than 118,000 teens aged 13 to 17 — showed that 42.9% feel irritated, nervous, or in a bad mood over anything. Almost half of your classroom. Much of that irritation is born right here: life did not obey the plan. It is worth swapping one question for another. Instead of "why did this happen to me?", try "Lord, what are You doing with this?". The first question stalls; the second moves forward. James puts it the same way: "Instead, you ought to say, “If the Lord is willing, we will live and do this or that.”" (James 4:15) — planning is good, and Paul planned; surrendering the plan is better. "A man’s heart plans his course, but the LORD determines his steps." (Proverbs 16:9).

One last observation, and it is important: not every closed door is from God, and not every closed door is from the enemy. Sometimes the door closed because you did not study. Sometimes it closed because of someone's malice. And sometimes it closed because God was saving something else. You will not always know which one it is — Paul did not know at the time. What you can do is what he did: keep walking, with the Word in hand, until the direction appears.

Christ in the Lesson

Take Christ out of this lesson and it becomes just an old map with hard names.

The Spirit who closes and opens doors in Acts 16 is the Spirit whom Jesus promised to send: "However, when the Spirit of truth comes, He will guide you into all truth. For He will not speak on His own, but He will speak what He hears, and He will declare to you what is to come." (John 16:13). He is not an impersonal force pushing people across a map; He is God leading His own. The mission was never Paul's — it was Christ's, and Paul was the one sent.

And there is a second picture of Christ in this lesson, a quieter one. Mark failed and went back home. Peter denied the Lord three times and wept. And the same Jesus who restored Peter by the sea restored Mark until Paul himself asked for him back by name. Neither of the two remained, forever, the worst day of his life. If you have ever failed badly in something that belonged to God, this is the news of the lesson: He does not write your name in pencil or in chalk — and the last word over you is not your stumble.

Notice, finally, the path: Asia closed, Bithynia closed, open sea, Europe. It was by that boat from Troas that the Gospel began to move toward the West — and, many centuries later, reached us here. The route Paul did not plan is the route by which you heard about Jesus.

Practical Application

Stop treating every "no" as punishment. Paul was right, wanted to preach, and heard "no" twice. The closed door was neither punishment nor a sign that he was off the path — it was part of the path. Before concluding that God has forgotten you, ask what He is preparing.

Do not outsource discernment, but do not decide alone either. No one decides for you, and you were not made to decide in isolation. Bring the big decisions of this stage of life — friendships, dating, school choices, what you post — to the four questions: what the Bible says, what you asked in prayer, what the mature believers who know you say, and what your real motivation is.

Leave a door open for someone who failed. Someone in your circle is already "the one who ruined everything" — quit the group, failed to show up when needed, disappointed everyone. Barnabas bet on a young man like that and the church gained an evangelist. You do not need to pretend nothing happened; you need not to close the account forever.

Closing Prayer

Lord Jesus, thank You because You lead those who set out on the way. Teach us to plan without hardening our hearts, and to surrender our plans without standing still. When a door closes, keep us from bitterness and haste. Give us Your Word in our hands, Your Spirit in our hearts, and mature people nearby, so that we may learn to recognize Your voice. And thank You because no fall is the final word over us: You restored Mark, and You restore us as well. In Your name, amen.

Soli Deo Gloria — Scripture governs; everything else, on its knees.

Teacher's Guide

Essence of the class

God directs those who are walking: He closes doors, opens others — and drags no one; He expects the believer to cooperate, with the Word in hand, prayer, and a working mind.

Map of the class

Time	Stage
0–5 min	Opening — the plan that did not happen
5–14 min	Point 1 — The route of the second journey
14–23 min	Point 2 — Change of plans
23–31 min	Class activity — putting the pieces together
31–38 min	Point 3 — Spiritual sensitivity
38–42 min	Christ in the Lesson + hard questions
42–45 min	Wrap-up + challenge + prayer

Start like this

Ask: "What was the last good plan you made that simply did not happen?" Insist on "good" — a flawed plan does not count; it has to be a right plan that fell through. Let three or four students share. Cancelled trips, broken-up teams, a friend who changed schools, a rescheduled test, or a course that fell through will likely come up. Then ask: "And at the time, what went through your head?" Anger, "God didn't hear me," "just my bad luck" will show up. Hold on to those answers — the whole lesson speaks to them. Close like this: "Today we are going to see the greatest missionary in history hear 'no' twice in a row, without understanding why. Hold on to that scene." Open to Acts 15:36.

Point 1 — The route of the second journey

• In the quarterly: topic I, "The route of the second journey".
• What to teach: Paul's plan was simply to revisit the churches from the first journey. Barnabas wanted to take John Mark again; Paul thought they should not. The contention was so sharp that they parted from each other: Barnabas went with Mark to Cyprus, and Paul went on with Silas through Syria and Cilicia. Make very clear to the class what the text says and what it does not say — the Bible does not reveal why Mark went back in Acts 13:13, and it does not say which of the two was right.
• Anchor verse: "Some time later Paul said to Barnabas, “Let us go back and visit the brothers in every town where we proclaimed the word of the Lord, to see how they are doing.”" (Acts 15:36).
• Key question: "Have you ever seen a good friendship end over a disagreement where both sides had a piece of the truth?"
• Likely answers (+ going deeper): they will tell about fights in a group, on a team, or in a school pair — and most will want to pick a guilty party. Go deeper: "What if, in this story, both were right about something? Notice that the Bible does not pick a guilty party here. Why do you think it left that open?" If someone calls Mark weak, correct them firmly and without embarrassing them: "the Bible does not say that — we are the ones saying that."
• If no one speaks: tell one of your own first, small and real (a disagreement where it took you time to see the other person's side). Then repeat the question. Close the point with 2 Timothy 4:11 — the end of Mark's story usually wakes the class up.

Point 2 — Change of plans

• In the quarterly: topic II, "Change of plans".
• What to teach: Paul wanted to preach in the province of Asia and was forbidden by the Holy Spirit; he tried Bithynia and the Spirit did not allow them; he went down to Troas and there had the vision of the man of Macedonia. In Acts 16:10 the team concludes, together, that God was calling them. It was not Paul's plan to go to Europe — it was God's plan.
• Anchor verse: "And when they came to the border of Mysia, they tried to enter Bithynia, but the Spirit of Jesus would not permit them." (Acts 16:7).
• Key question: "What is the difference between a door that closes because you did not put in the effort and a door that God closes?"
• Likely answers (+ going deeper): "when it's from God we feel peace"; "when it's from God something better shows up later"; "you can't tell." Go deeper: "Did Paul feel peace at the time, or did he only understand later? Be careful with the 'something better showed up' rule — what if it doesn't show up this week?" Value highly anyone who answers "you can't always tell" — that is closer to the text than it seems.
• If no one speaks: draw three doors on the board — ASIA, BITHYNIA, MACEDONIA — cross out the first two, and ask: "where do you think the most generous church in the New Testament was?" Write PHILIPPI under the third.

Point 3 — Spiritual sensitivity

• In the quarterly: topic III, "Spiritual sensitivity", and the devotional aid that deals with how to know the will of God.
• What to teach: the text does not say how the Spirit stopped Paul, and therefore no one should state it as fact. What the Bible teaches is the path of discernment: Scripture, prayer, the counsel of mature Christians, and examining one's own motivations. God directs and the believer cooperates — obeying is not switching off your thinking (Acts 17:11; 1 Thessalonians 5:21).
• Anchor verse: "My sheep listen to My voice; I know them, and they follow Me." (John 10:27).
• Key question: "How do you know, in practice, whether an idea that came into your head is from God or is just your own wish dressed up as prayer?"
• Likely answers (+ going deeper): "I feel it in my heart," "a door opened," "my pastor said so," "I don't know." Go deeper: "Feeling counts — but feeling alone has led many people to the wrong place. If the idea goes against something clear in the Bible, do you need any further proof?" Do not humiliate anyone who says "I feel it in my heart"; add criteria instead of taking theirs away.
• If no one speaks: share a decision that you took through the four questions (a small decision works, and is better than a big one). Then ask who has a real decision to make this week. That gets the class talking.

Class activity

• Goal: to practice, as a group, the "putting the pieces together" of Acts 16:10 — reaching a conclusion using criteria rather than impulse.
• Materials: a board or a large sheet of paper, plus paper and pen for each group.
• Step by step: write the four questions on the board: (1) What does the Bible say about this? (2) Did I really pray? (3) What do the mature Christians who know me say? (4) What is my real motivation? Divide the class into groups of three or four and give each group the same fictional situation, without using the name of anyone in the class: "A teen was invited into a new group at school. It is the chance to finally have someone to sit with at break. But the group has an unspoken rule: no one says anything when they mock someone. He really wants to join." Give 4 minutes for each group to take the situation through the four questions and write one conclusion in a single sentence. Then have each group read theirs. Compare the conclusions — neither reward nor eliminate any group.
• Wrap-up (back to the text): "That is exact what Paul's team did in Troas. The vision came from God; the conclusion they put together jointly, talking it through — concluding that the Lord was calling them (Acts 16:10). God directs, but He does not decide in your place as if you were an object. He leads people who think, pray, and choose to follow Him."

If they ask you this

• "So who was wrong: Paul or Barnabas?" The Bible does not say, and therefore we do not say either. Both had legitimate arguments: Barnabas was betting on a second chance; Paul was protecting a dangerous mission and only had the past to judge by. What Scripture shows is the outcome: Mark was restored and became useful to Paul himself (2 Timothy 4:11).
• "Was it God who separated the two in order to double the work?" Acts does not state that. It records the disagreement and records that the work went forward along two paths — without saying that one thing caused the other. God brings good even out of what was born of human friction; that does not turn friction into a divine plan.
• "Did the Holy Spirit speak out loud to Paul?" The text does not say how. It says Paul was forbidden, and stops there. Some propose an inner conviction, others the word of a prophet, others a direct revelation — these are proposals by scholars, not the statement of the Bible. Where the Word is silent, we do not invent.
• "If God has a plan, why should I plan?" Paul planned (Acts 15:36) — and his plan was good. Planning is responsibility; surrendering the plan is faith. "Instead, you ought to say, “If the Lord is willing, we will live and do this or that.”" (James 4:15).

Wrap-up + challenge of the week

• Wrap-up: "Paul left home to make a visit and ended up opening a continent. Two closed doors were not God taking something away from him — they were God saving Europe. And it was by that boat that the Gospel began to come in our direction. You will not understand every change at the time. But the Lord who closed and opened those doors is the same One who said that His sheep hear His voice (John 10:27)."
• Challenge: take one real decision you have this week, write it down on a piece of paper, and take it through the four questions, writing down the answer to each one. At the end, write the next step you are going to take. Come back on Sunday with the story.

Teacher's kit

• Before: read Acts 15:36 to 16:15 aloud, in one sitting, to feel the rhythm of the route; read the three topics in the quarterly; and decide before class how you will answer if a student calls John Mark weak or a coward.
• Bring: a Bible, a marker or chalk, paper and pens for the groups, and a map of the region (printed or on your phone) if you can get one.
• Pray beforehand: ask God that no student leaves thinking a closed door is a sign that God has given up on him — or that following God means obeying without thinking.

Homework

Your mission for the week

Choose one real decision you have for this week — a friendship, an answer you need to give, an invitation, a school subject, a habit. Write it down on a piece of paper and take it through the four questions, writing down the answer to each one: what the Bible says about this; what you asked in prayer; what a more mature Christian who knows you said; and what your real motivation is. At the bottom of the sheet, write the next step you are going to take.

Why

In Troas, Paul's team did not receive a ready-made script: they received a vision and put the pieces together — concluding that the Lord was calling them to preach the gospel to them (Acts 16:10). God directs; you cooperate. Whoever never practices this in a small decision will not know how to do it when the big one comes.

How to know you did it

There is a piece of paper with the four questions answered and a next step written with an action verb. If the paper exists and you talked with someone more mature, you did it.

On Sunday, come back with the story

The next class starts with whoever brought the paper. Share what the decision was, which question was the hardest to answer — and what you have already done about it.