Most of us have been trained — maybe without even realizing it — to think of prophecy as a kind of spiritual fortune-telling. Someone with a special gift peers into the future and tells us what's coming. So when we read a passage like Joel's vision of sons and daughters prophesying, visions, dreams, and cosmic signs in the heavens, it's easy to let our imagination run straight toward prediction and mystery and end-times speculation. But when Peter stands up on the day of Pentecost and quotes that passage from Joel, he's not doing what we might expect. He's doing something far more grounded, far more immediate — and honestly, far more challenging — than predicting the future. He's proclaiming what God has just done. And that distinction matters more than most of us have ever been taught.
A Word About Acts Before We Begin
We're spending some time in the season of Pentecost looking at how God worked on that remarkable day to draw a whole crowd of people to faith in Jesus. The account we're working from is Acts chapter two — part of the book properly titled the Acts of the Apostles. It's worth pausing for a moment on the book itself before we dive into the sermon Peter preaches, because understanding what Acts is and how it works actually helps us read Peter's words more faithfully.
About a quarter of the entire book of Acts is made up of speeches — sermons, defenses, proclamations given by various apostles and witnesses. And people sometimes raise a reasonable question: How did Luke, whom we believe wrote this book, have access to the content of these speeches? Peter's Pentecost sermon wasn't written out beforehand. Nobody handed Luke a manuscript afterward that said, "Here's exactly what Peter said, word for word." So how do we read these speeches?
I think the right way to hold this is to say: we can be genuinely confident that what Luke records for us is accurate — faithful to the substance of what was spoken. But we shouldn't read it as a perfect verbatim transcript either. What we have is more like a careful condensation of the central ideas, shaped and packaged so that it functions as a proclamation to us, the readers. Luke almost certainly interviewed Peter and others later and was quoting portions of what he heard. But God worked through Luke in a particular way — not to give us a recording, but to give us the living Word. That's actually more than enough. What matters is what's being proclaimed here, and what God is doing through it even now as we read.
Peter Stands Up and Addresses the Crowd
So here's the scene. The Holy Spirit has just come on the disciples gathered in Jerusalem. They are speaking in languages they have never learned, and people from all over the known world are hearing them speak in their own native tongues. It is strange and overwhelming and completely unexplainable. And predictably, some people in the crowd dismiss the whole thing with a simple and somewhat cynical explanation: these people are drunk.
Peter doesn't let that stand. He stands up with the eleven, raises his voice, and addresses the crowd directly. And the first thing he does is deal with the accusation head-on. It's the third hour of the morning, he says — roughly nine o'clock. Nobody's drunk at nine in the morning. That's not what's happening here. Stop the foolishness and actually listen, because what you're witnessing right now has a name. It has a history. It was spoken about centuries ago.
What follows is one of the most fascinating moments of biblical interpretation in the entire New Testament. Peter quotes from the prophet Joel — specifically Joel 2:28–32 — and he says: this is what Joel was talking about. Right now. Today. What you are watching unfold in this courtyard is the fulfillment of an ancient promise.
"But this is what was uttered through the prophet Joel: 'And in the last days it shall be, God declares, that I will pour out my Spirit on all flesh, and your sons and your daughters shall prophesy, and your young men shall see visions, and your old men shall dream dreams; even on my male servants and female servants in those days I will pour out my Spirit, and they shall prophesy. And I will show wonders in the heavens above and signs on the earth below, blood, and fire, and vapor of smoke; the sun shall be turned to darkness and the moon to blood, before the day of the Lord comes, the great and magnificent day. And it shall come to pass that everyone who calls on the name of the Lord shall be saved.'"
What Peter Is Actually Doing: The Pesher
The interpretive move Peter is making here has a name in Jewish scholarship. It's called a pesher. A pesher is the recognition that a prophecy — one that may have been understood in a more general or historical sense for generations — has just been fulfilled by specific events that are unfolding right now. The light bulb comes on. Something clicks. You read the old words and suddenly you see: oh, this is what they were talking about.
When Joel first wrote down this vision, he was almost certainly thinking first and foremost about the salvation of God's people in his own era — about the way God would move among the people of Israel, restore them, save them, bless them through his Spirit. And that prophecy had a genuine meaning and fulfillment in Joel's own time and context. But Peter, standing in the middle of one of the most extraordinary moments in human history, sees something more. He recognizes that Joel was also pointing — whether Joel fully understood it or not — to this exact moment, when God would pour out his Spirit not on one nation or one tribe or one class of people, but on all flesh. Men and women. Young and old. Servant and free. No distinctions. No qualifications except this: the willingness to call on the name of the Lord.
This is one of the things that makes biblical prophecy so rich and so different from what we typically mean when we use that word in modern conversation. The prophets weren't primarily in the business of issuing precise future predictions for people to decode like a puzzle. They were, first and foremost, speaking God's word into their own present — confronting sin, promising grace, calling people back to the Lord. And God, in his sovereignty, wove into those words a deeper freight of meaning that pointed ahead to Christ and to everything Christ would accomplish. It's only in hindsight, standing on the other side of the resurrection, that Peter can see the full weight of what Joel wrote.
What "Prophesy" Actually Means
Now we come to the part that I think trips people up the most, and it's worth slowing down here. Joel says — and Peter quotes — that when the Spirit is poured out, sons and daughters will prophesy. Young men will see visions, old men will dream dreams. And the word prophesy lands in our ears in a very particular way. We hear it and we think: predicting the future. Special revelation. Somebody getting a supernatural download of information about what's coming next week or next century.
But that is not what prophecy is fundamentally about — not in the Old Testament, and not here. At its root, prophecy is about receiving God's word and God's message, and then proclaiming that word. The prophet is not primarily a fortune-teller. The prophet is a messenger, a herald, a witness. To use language from Acts 1:8, where Jesus tells his disciples they will be his witnesses to the ends of the earth — that is what prophecy is pointing toward. It is taking the words of God and speaking them into the present moment, wherever you are.
Go back through the Old Testament prophets and notice what they actually spend most of their time doing. They're not giving a detailed timeline of future geopolitical events. They're confronting God's people with sin. They're calling the community back to covenant faithfulness. They're pointing to the grace of God that is still available even in the face of judgment. That's the prophetic task. And it is, unmistakably, what the church does today. We proclaim God's truth that confronts people with sin — not to condemn them, but so they can see their need. And then we point to Jesus as Savior, so they can receive his forgiveness and walk in his grace. That is prophecy. That is what Joel was talking about. That is what Peter says is now happening.
And here is the remarkable thing: Peter — through Joel — is saying that this work is not reserved for a special class. It doesn't belong only to the professionally religious, only to the ordained, only to the publicly recognized spiritual leaders. The Spirit is poured out on all flesh. Every believer is empowered and called to share the good news where God gives the opportunity. That is a breathtaking claim, and it should reshape how every one of us thinks about our own lives and our own role in the community of faith.
The Role of Pastors — and the Role of Everyone Else
I want to pause here and say something carefully, because I don't want this to be misread. The fact that every believer is called to prophesy — to bear witness, to proclaim the gospel in word and life — does not flatten every distinction in the church. The apostles in Acts play a singular and irreplaceable role as the public face of the gospel going out into the world. They appointed pastors and teachers to continue that public proclamation. And yes, pastors and teachers in the church do hold a particular calling to that public, formal work of preaching and teaching the Word. The church, by the work of the Spirit, calls people into that office and sets them apart for it.
But here's the thing — and I want to be clear about this because it matters: that work belongs to the whole church. The work of proclaiming the gospel isn't something that lives only with me or any other pastor. It lives in the body. Pastors get to do it in the public setting of worship and teaching. The church has called us to that. But every single person in whom the Spirit dwells is a witness. Every conversation you have with a neighbor, every act of service, every moment where you speak honestly about what God has done in your life — that is the prophetic work of the whole people of God. Young and old. Male and female. No distinction in class or status or how long you've been a Christian.
So when you read this passage and you feel a nudge — like maybe this is talking about you, about something you're supposed to be doing — that nudge is right. It is talking about you. God pours out his Spirit on you so that you can believe, yes. But also so that you can speak. So that the good news can go forward through your voice and your life and your relationships.
The Apocalyptic Language: What Do We Do With It?
The middle section of the Joel passage that Peter quotes is what scholars call apocalyptic — and it's the part that can feel the most disorienting if we're not sure how to read it. Blood and fire, vapor of smoke. The sun turned to darkness, the moon to blood. These are cosmic, dramatic images, and it's fair to ask: what exactly is being described here?
I think there are two valid readings, and I don't think we have to choose just one of them.
The first reading is that this is describing real, physical upheaval in nature — supernatural signs accompanying the coming of God's kingdom into the world. And there's actually a pattern of this throughout the story of Jesus. When Jesus was born, a star appeared and guided the magi to him. Something was happening in the heavens. When Jesus died on the cross, there was an earthquake. When he rose from the dead, the earth shook again. There are even moments in Acts where people come to faith and the very building they're gathered in is physically shaken. God moves in creation. Nature responds to the presence and work of its Creator in ways that go beyond the ordinary. That is a real and biblical witness.
The second reading is that this language is metaphorical — a way of describing what happens to human history when the kingdom of God breaks in. The whole world is convulsed. Everything is overturned. The death and resurrection of Jesus is not just one more event in the stream of history. It is the event that redefines history, that changes the trajectory of every human life and the entire created order. When Joel talks about the sun going dark and the moon turning to blood, he might be reaching for language that captures the sheer magnitude of what God is about to do — the way that when Christ comes, dies, rises, and pours out his Spirit, nothing can ever be the same again.
Both of those readings seem honest to the text, and I think there's genuine room to hold both. The point either way is not to give us a precise timetable or a chart to decode. The point is that when God acts in Christ, it's not a small thing. It's everything. It shakes the foundations. It reverses the power of sin and death. It restores what was broken between humanity and God. That is what Joel is gesturing toward, and that is what Peter is now announcing has arrived.
Everyone Who Calls on the Name of the Lord
The passage from Joel ends with a verse that Peter clearly treats as the hinge of the whole thing: it shall come to pass that everyone who calls on the name of the Lord shall be saved. This is the point toward which everything else has been building. This is what the outpouring of the Spirit is for. This is what the prophecy and the visions and the dreams are in service of.
For Joel, writing in his own time and place, salvation had a particular shape — it was about the deliverance of the people of Zion, the rescue of God's covenant people from the nations and from the enemies that surrounded them. That was real and true and God absolutely delivered on it. But Peter, standing in the light of Easter, reading that same verse through the lens of everything that Jesus has done, sees that the promise is wider and deeper than even Joel could have fully known at the time. When Joel wrote everyone who calls on the name of the Lord, he was speaking into a salvation that Christ would one day complete for the whole world.
Because Jesus has come, died for sin, and risen from the dead, salvation is now not about deliverance from surrounding nations. It is about deliverance from sin itself. From the guilt that separates us from God. From the death that is the consequence of that separation. And it comes — this is the staggering part — to everyone who believes and calls on the name of the Lord. Anyone. Not a restricted group. Not the morally impressive or the religiously accomplished. Anyone who trusts in Jesus, who calls on him, who receives his death and resurrection as the atonement and the new life he came to give. That's the promise. It is as wide as the word everyone, and it is as certain as the resurrection itself.
The Spirit Brings the Right Word at the Right Moment
There's one more thing about this moment that I want to point to before we close, because I think it's easy to miss and it's actually quite beautiful. Peter didn't prepare this sermon. He didn't have a manuscript. He was standing in a chaotic, noisy crowd, having just experienced one of the most overwhelming moments of his life, and he began to preach. And in that moment, the Spirit brought Joel 2 to his mind — not as a vague memory, but as a living word that fit exactly what was happening around him.
Part of what this tells us is something about Peter and the apostles and how deeply they knew the Scriptures. These men were soaked in the Word of God. The promises and images and narratives of the Old Testament were woven into the fabric of how they thought. When the Spirit needed to bring a word to the surface, there was a deep well to draw from. That's worth sitting with for a moment, honestly. The Word we read and memorize and pray over and sit with over years of faithful practice — it doesn't disappear. It becomes part of us, and the Spirit can use it.
But it's also a witness to what the Holy Spirit does in his people. Peter isn't just a well-prepared preacher pulling from his notes. He is a man through whom the Spirit is speaking — connecting ancient promise to present reality, opening up the meaning of what God has just done so that the crowd can hear it, receive it, and respond. That is the Spirit's work, and it is the same work the Spirit continues to do in the church today. He takes the Word of God and makes it alive and present and applicable. He brings it to the surface at the moment it's needed.
And what the Spirit is setting up through all of this — through Joel, through Peter, through the whole drama of Pentecost — is an invitation. An open door. Everyone who calls on the name of the Lord will be saved. The Spirit is moving so that people can hear that word, believe it, and walk through that door. That's what Peter's sermon is building toward. That's what we'll turn to next as we continue working through this passage.
In the meantime, here's a question worth sitting with this week: When you think about the word prophesy — about bearing witness, speaking God's truth, pointing people to Jesus in the ordinariness of your life — where is the Spirit calling you to do that? Not from a pulpit, necessarily. Maybe over a fence with a neighbor. Maybe in a hard conversation with someone you love. Maybe just in the quiet faithfulness of how you live. The Spirit has been poured out on you. You have received the gift. The question is whether we're willing to open our mouths and speak.
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