The Book of
1 Thessalonians
Encourages holy living while awaiting Christ’s return.
1 Thessalonians
WHEN JESUS IS COMING BACK
The Gospels show you who Jesus is. Acts shows you what His Spirit started doing. Romans shows you how a person is made right with God. 1 Corinthians shows you how to live together as the church. 2 Corinthians shows you how to keep walking when it gets hard. Galatians shows you that you are free. Ephesians shows you who you are now. Philippians shows you how joy can be real even when life is not. Colossians shows you that Jesus is enough.
1 Thessalonians shows you how to live with hope between Jesus' first coming and His return.
It is one of the earliest letters Paul ever wrote, possibly the earliest. He had only spent a few weeks with the Thessalonians before opposition forced him out of the city. He left worried. They were brand new believers. The pressure was real. Would they last?
Months later his friend Timothy went back, checked on them, and brought back news that they were doing well. Their faith was holding. Their love for one another was visible. Their hope in Jesus' return was steady. Paul wrote 1 Thessalonians in relief and joy and tenderness, with a few specific things they still needed to hear.
One of those things is the question many believers carry quietly. What happens to the people I love who die before Jesus returns? And how do I live faithfully in the time between now and then?
Paul answers both questions in this letter. He gives one of the clearest passages in the Bible on the hope believers have for those who have died in Christ. And he gives practical, gentle, daily guidance for the in-between time. Faith. Love. Hope. Three words that will run through the whole letter.
This guide will not replace your Bible. It is here to walk alongside you while you read it. Open 1 Thessalonians soon, and let what is said here send you back to the source.
Who Wrote It
Paul. With Silvanus and Timothy named alongside him in the opening greeting (1 Thessalonians 1:1). The story of the Thessalonian church being planted is in Acts 17:1-9.
Paul had come to Thessalonica on his second missionary journey, around AD 49 or 50. He preached in the synagogue for three Sabbaths, explaining from the Hebrew Scriptures that the Messiah had to suffer and rise from the dead, and that Jesus was the one. Some Jews believed. A large number of Gentiles believed. Several prominent women believed. A church was born.
Then opposition came. A mob attacked the house where Paul was staying. The believers had to send him out of the city by night for his safety. He went on to Berea, then Athens, then Corinth. From Corinth, around AD 50 or 51, he wrote this letter. It is one of the earliest documents in the New Testament, written within twenty years of Jesus' resurrection.
Paul writes as someone who loves these people deeply and was forced to leave them too soon. He calls them his joy and his crown (1 Thessalonians 2:19-20). He says he wanted to come back to them again and again but was prevented (1 Thessalonians 2:18). When he could not come, he sent Timothy. When Timothy returned with good news, Paul could not contain himself. He wrote at once.
If you have come to Jesus recently and feel that everything is happening fast, that the people who first told you about Him are not always available, that you are still working out what comes next, this letter was written for you. Paul wrote it specifically for people in your stage. Not for mature Christians. For new ones.
Who He Was Writing For
Thessalonica was the capital of Macedonia, a busy port city, the largest in the region. The believers there were mostly Gentiles who had come out of pagan worship to follow Jesus (1 Thessalonians 1:9). They had turned from idols to serve a living and true God. They were living that out under real pressure.
The opposition that had forced Paul out of the city was still there. The believers were facing persecution from neighbours, family, former friends. Some of them had begun to die, and the rest were grieving and confused. Was Jesus going to return soon? Had those who died missed it? What was supposed to happen to them?
These are the actual questions a young, pressed church was asking, less than twenty years after Jesus rose. Paul writes this letter to answer them.
If you are facing pressure from people around you for following Jesus, this is a letter for you. If you have lost someone who was a believer and are wondering what to do with the grief, this is a letter for you. If you are working out what it means to live the in-between time, between Jesus' first coming and His return, this is a letter for you.
The Tone of the Letter
1 Thessalonians is warm. Paul writes as a father writing to children he loves (1 Thessalonians 2:11). He writes as a nursing mother caring for her own child (1 Thessalonians 2:7). He uses tender words throughout. He thanks God for them constantly (1 Thessalonians 1:2 and 3:9). He reassures them that they are doing well. He reminds them that they are loved by God and chosen by Him (1 Thessalonians 1:4).
The tone is one of the most encouraging in the New Testament. Paul is not correcting a crisis here, the way he was in Galatians. He is not defending the gospel against attack, the way he was in Colossians. He is gently teaching young believers what they need for the road ahead, while telling them clearly how proud he is of how they have started.
If you have come to Jesus recently and are still finding your feet, 1 Thessalonians is the New Testament book that is most pastorally suited to where you are right now. Paul is writing to people in exactly your stage of the journey.
The Spine of the Letter: Faith, Love, Hope
Paul opens the letter with three words that will run through every chapter.
constantly bearing in mind your work of faith and labour of love and steadfastness of hope in our Lord Jesus Christ in the presence of our God and Father.
1 Thessalonians 1:3
Read those three again. Faith. Love. Hope. Each one is doing real work.
Faith is what produces work. Trust in Jesus is not passive. It moves into action. The Thessalonians were living differently because they trusted Him. Their faith was visible.
Love is what produces labour. Genuine love costs something. The Thessalonians were not just feeling affection for each other. They were doing the kind of work love asks for. Practical care. Showing up. Carrying each other.
Hope is what produces steadfastness. The Thessalonians were standing firm under pressure because they were waiting for someone. Jesus. They knew He was coming back. That hope was holding them steady.
These three words come back at the end of the letter too. Paul tells them to put on the breastplate of faith and love, and as a helmet, the hope of salvation (1 Thessalonians 5:8). The same three. Faith. Love. Hope. The spine of the whole letter.
If you are wondering what the Christian life is meant to look like in everyday terms, you can start here. Faith that produces action. Love that costs something. Hope that holds you steady because Jesus is coming back. Three things to grow in. The rest of the letter shows you how.
The People We Love Who Have Died
Now to the heart of the question. Some of the Thessalonian believers had died. The ones still living were grieving them, and wondering anxiously whether they had missed Jesus' return. Would they be left behind? Would they be separated from their loved ones forever?
Paul writes one of the most comforting passages in the Bible.
But we do not want you to be uninformed, brothers and sisters, about those who are asleep, so that you will not grieve as indeed the rest of mankind do, who have no hope. For if we believe that Jesus died and rose again, so also God will bring with Him those who have fallen asleep in Jesus.
1 Thessalonians 4:13-14
Read this slowly.
We do not want you to be uninformed. Paul is not avoiding the question. He is going to give them an answer.
About those who are asleep. Paul uses the language of sleep for believers who have died. Not because death is unreal. Because for those who belong to Jesus, death is not the end. It is more like a sleep from which they will wake.
So that you will not grieve as those who have no hope. Notice he does not say do not grieve. Grief is real. Grief is allowed. He says do not grieve as those who have no hope, for Christian grief carries a hope the world cannot fully offer.
For if we believe that Jesus died and rose again. The whole answer rests here. The same Jesus who died and was raised is the proof that those who die in Him will also be raised.
So also God will bring with Him those who have fallen asleep in Jesus. When Jesus returns, He will bring with Him those who have died in Him. They have not been lost. They have not been left behind. They are with Him, and they will return with Him.
Sit with this for a moment. If you have lost someone who loved Jesus, this is the verse that tells you what has happened to them. They are with Him now. They will return with Him. And together, you will always be with the Lord.
He says the dead in Christ will rise first. Then those who are still alive when Jesus comes will be caught up together with them to meet the Lord in the air. And so we shall always be with the Lord (1 Thessalonians 4:16-17). The reunion is real. The future is shared. The believers who have already died and the believers who are still alive at His return will be together with Him, forever.
Then Paul says the line that has been read at countless Christian funerals for two thousand years. Therefore comfort one another with these words (1 Thessalonians 4:18).
The words are meant to comfort. Comfort yourself with them. Comfort other believers with them when they grieve. The reunion is coming. Jesus is the guarantee.
A note about what this passage does and does not say. Paul is writing specifically to believers about believers who have died. He gives clear comfort for that situation. He does not address every grief or every person we have lost. Some of you reading this will be carrying grief about people whose faith you could not see clearly when they died. The Bible does not give us a verse that tells us, for each particular person, what happened in the final hidden moments of their heart. What the Bible does give us is the character of God. Genesis 18:25 says the Judge of all the earth will do what is right. He sees what we cannot see, and He always does what is right. He is also just. The Bible also says God knows the heart in a way no human can (1 Samuel 16:7). That is enough to keep walking in faith.
How to Live Faithfully in the In-Between
The second half of your question is the second half of the letter. How do I live faithfully now, in the time between Jesus' first coming and His return?
Paul gives some of the most practical guidance in the New Testament for daily Christian life. It is short. It is simple. It is concrete.
He says walk in a way that pleases God (1 Thessalonians 4:1). He says abstain from sexual immorality, because your body belongs to Him now (1 Thessalonians 4:3-8). He says keep growing in love for one another, and aim to live a quiet life, attending to your own work and matters with your hands, so that you behave properly toward outsiders (1 Thessalonians 4:9-12).
That last point is worth slowing down on. Live a quiet life. Attend to your own work. Behave properly toward outsiders. For a generation that lives online and is constantly being pushed toward outrage, performance, comparison, and noise, this verse is medicine. The Christian life Paul describes is largely ordinary. Faithfulness in your work. Faithfulness in your relationships. Quiet steadiness instead of anxious performance. That is the shape of how you live in the in-between time.
Then he gives a series of short instructions in chapter 5 that are some of the most useful pieces of Bible for everyday faith.
Rejoice always, pray without ceasing, in everything give thanks; for this is the will of God for you in Christ Jesus.
1 Thessalonians 5:16-18
Three short sentences. Each one is a practice you can build into your day.
Rejoice always. Not pretend to be cheerful. Find what is true and good and worthy of joy in any situation, and let yourself be glad about it. Joy is not dependent on circumstances. The same Jesus who is the source of the joy Philippians describes is the source of the joy here.
Pray without ceasing. Not pray for hours every day. Keep an open line. Talk to Him. About little things and big things. Through the day. Prayer is not a religious event. It is a continuous conversation with the One who is always with you.
In everything give thanks. Find something to thank Him for, even now, even in this. Thanksgiving is one of the simplest spiritual practices and one of the most transforming. It rewires the way you see what is in front of you.
Paul says this is the will of God for you in Christ Jesus. People sometimes worry about finding the will of God for their life. Here is part of the answer. Joy. Prayer. Thanksgiving. Start there. The rest will follow.
A few verses later he adds more. Do not quench the Spirit (1 Thessalonians 5:19). Examine everything carefully. Hold fast to what is good. Abstain from every form of evil (1 Thessalonians 5:21-22). Plain. Practical. Daily practice.
The Promise That Holds the Whole Letter
The letter closes with one of the most reassuring promises in the New Testament.
Now may the God of peace Himself sanctify you entirely; and may your spirit and soul and body be kept complete, without blame at the coming of our Lord Jesus Christ. Faithful is He who calls you, and He also will do it.
1 Thessalonians 5:23-24
Read the last line slowly. Faithful is He who calls you, and He also will do it.
The work of growing you, of keeping you, of bringing you safely through to the day Jesus returns, is His work. He is the one who started it. He is the one who will finish it. He is the God of peace, and He is faithful.
If you are afraid that you will not make it, that you will lose your faith, that you will fail somewhere along the way, this verse is for you. You are not keeping yourself by your own strength. The God who called you is faithful, and He will do it. The keeping is His.
This is the promise that holds 1 Thessalonians together. The God who called you is faithful. The Jesus you are waiting for is coming back. The believers you have lost will be raised. The life you are living in the in-between will not be wasted. He is the one carrying it all.
A Few Threads from the Old Testament
1 Thessalonians does not quote the Old Testament much directly. Paul is writing to people whose background was mostly pagan, not Jewish, so he does not lean on extensive Hebrew Scripture references the way he does in Romans or Hebrews. But the picture of Jesus' return in chapter 4 echoes prophetic imagery. The voice of the archangel and the trumpet of God (1 Thessalonians 4:16) recall Old Testament passages where God's coming is announced with trumpets and shouts (Exodus 19:16, Zechariah 9:14, Joel 2:1). What is coming is not some new event grafted onto the world. It is the great day God has been pointing toward all along, now centred on the return of Jesus.
The "day of the Lord" language Paul uses in chapter 5 also comes straight from the prophets. Old Testament prophets spoke of a coming day when God would put everything right. Paul says that day is the day Jesus returns (1 Thessalonians 5:1-11). The story has been pointing to Him from the beginning. He is the one all the threads tie together in.
How to Read 1 Thessalonians
It is short. Five chapters. You can read it in one sitting, and there is real value in doing exactly that.
If you are not sure where to begin, here is something gentle to try. Read chapter 1, slowly, and notice how often Paul mentions faith, love, and hope together. Then sit with chapter 4, especially verses 13 to 18, the comfort passage about those who have died. Then read chapter 5, especially verses 16 to 24, the practical guidance for daily life. After that, go back and read the whole letter from the beginning.
Keep coming back to chapter 4 verses 13 to 18 throughout your life. You will need it when believers you love die. The words are there to comfort you, and to help you comfort others.
What 1 Thessalonians Means for Your Life Now
If you have lost someone who loved Jesus, return to chapter 4. They have not been lost. They will be raised. And together, you will always be with the Lord. The grief is real, but it has a horizon. There is a sunrise on the other side.
If you are carrying grief about someone whose faith you could not see, you can bring that grief to God. He is the Judge of all the earth and He will do what is right (Genesis 18:25). He sees what no one else could see (1 Samuel 16:7). Trust Him with what is hidden, and keep walking. And if they belonged to Jesus in ways no one but Him could see, they too will be raised, and together, you will always be with the Lord.
If you are working out how to live faithfully in the time between now and Jesus' return, return to chapter 5. Rejoice always. Pray without ceasing. In everything give thanks. Live a quiet life. Attend to what is in front of you. Hold fast to what is good. The Christian life Paul describes is not loud. It is steady, thankful, full of small acts of faithfulness.
If you are afraid you will not make it, return to chapter 5 verses 23 and 24. Faithful is He who calls you, and He also will do it. The keeping is not your job. The keeping is His.
And if you ever want to know what the Christian life is meant to look like in three words, return to chapter 1 verse 3. Faith. Love. Hope. Trust in Jesus that produces action. Love for one another that costs something. Hope in His return that holds you steady. Three words to grow in for the rest of your life.
The Jesus who came once is coming again. The believers who are with Him will return with Him. The God who called you is faithful and will keep you until that day. The in-between is real, but it is not forever.
Live now in the light of then.
