Born Again Sermon

You Must Be Born Again: New Life Through the Spirit and the Son

John 3:1-17

Nicodemus was not a fool. He was not a skeptic looking for a fight. He was a Pharisee, a ruler of the Jews, a man who had given his entire life to the study of God's Word and the practice of God's law. He came to Jesus at night, and whatever his reasons for choosing that hour, what he brought with him was a genuine question about where Jesus had come from and what Jesus was doing. And Jesus, who always sees past the surface of what we say to what we actually need, gave him something he was not expecting.

He gave him a doctrine.

Not a parable. Not a healing. Not a sign. Jesus looked at this learned, religious, morally serious man and said, "Truly I tell you, unless someone is born again, he cannot see the kingdom of God." That is the central claim of John 3, and it is one of the most important sentences in all of Scripture. It tells us something about the human condition, something about the nature of salvation, and something about the power and grace of God.

Let us work through this text carefully, because every word matters.

What The New Birth Is

The first thing we need to do is define what Jesus actually means. He says a person must be born again. The word translated "again" in the CSB can also mean "from above," and that double meaning is exactly the point. When Nicodemus hears "born again," he immediately thinks of physical re-entry into the womb, which he rightly recognizes as impossible. Jesus corrects him: "Unless someone is born of water and the Spirit, he cannot enter the kingdom of God."

Scholars have discussed the phrase "born of water and the Spirit" in various ways, but the most natural reading in context is that Jesus is drawing a contrast between natural, physical birth and the supernatural birth that only the Spirit of God can accomplish. He makes this explicit in verse 6: "Whatever is born of the flesh is flesh, and whatever is born of the Spirit is spirit." Physical birth produces a physical person. Spiritual birth produces a spiritually alive person. These are two entirely different categories of existence.

Here is the doctrine in one sentence: The new birth is the sovereign work of the Holy Spirit by which a person who is spiritually dead is made spiritually alive, able to see and enter the kingdom of God.

This is not self-improvement. This is not religious education. This is not joining a church, being baptized, or making a moral resolution. All of those things have their proper place, but none of them is the new birth. The new birth is something God does. It is not something we achieve.

Jesus underlines this in verse 8 with one of the most striking analogies in the Gospels: "The wind blows where it pleases, and you hear its sound, but you don't know where it comes from or where it is going. So it is with everyone born of the Spirit." You cannot control the wind. You cannot manufacture it, schedule it, or bottle it. You can feel it and you can see what it does, but you cannot produce it. The Spirit of God works in the same sovereign freedom. The new birth is His work, not ours.

This should humble us. It should also relieve us. The weight of producing spiritual life does not rest on your shoulders, because you were never capable of carrying it.

Why The New Birth Is Necessary

Nicodemus is confused, and his confusion is instructive. He is a good man by every external measure. He is educated, devout, and sincere. And Jesus tells him that none of that is sufficient. "You must be born again." Not you might benefit from it. Not it would be helpful for your spiritual growth. You must.

The reason is the condition Jesus names in verse 6. Flesh produces flesh. Our natural birth, however wonderful, brings us into a world marked by sin and separation from God. We are not born spiritually alive and then gradually corrupted. We are born into a condition that requires something more than moral effort or religious instruction to remedy. The kingdom of God is not accessible by natural means because it is not a natural kingdom.

This is not a popular teaching. Every generation finds ways to soften it. We want to believe that sincere religion, good intentions, or cultural Christianity is enough. But Jesus is not speaking to a pagan or a criminal. He is speaking to one of the most religiously serious men in Israel, and He is telling him plainly that what he has is not sufficient. What he needs is a new birth.

The good news, and there is very good news here, is that what we cannot do for ourselves, God has provided.

How The New Birth Comes

Nicodemus asks the right question: "How can these things be?" And Jesus answers him, though the answer is larger than Nicodemus can fully grasp in that moment.

Jesus reaches back into Israel's own history in verses 14 and 15. He says, "Just as Moses lifted up the snake in the wilderness, so the Son of Man must be lifted up, so that everyone who believes in him may have eternal life." He is referring to the account in Numbers 21, where the Israelites were dying from the bites of venomous snakes as a consequence of their rebellion. God instructed Moses to make a bronze serpent and lift it up on a pole. Anyone who looked at it in faith would live. They did not have to do anything complicated. They did not have to earn their healing. They had to look, in trust, at what God had provided.

Jesus says that He is the fulfillment of that picture. He will be lifted up, and everyone who believes in Him will have eternal life. The cross is already in view in John 3. The new birth comes through faith in the crucified and risen Son of God.

Then comes verse 16, perhaps the most memorized verse in the Bible: "For God so loved the world that he gave his one and only Son, so that everyone who believes in him will not perish but have eternal life." And verse 17 follows immediately: "For God did not send his Son into the world to condemn the world, but to save the world through him."

Do not rush past these verses. Let them land.

God so loved the world. Not just the morally respectable part of it. Not just the people who were already seeking Him. The world, in all of its rebellion and brokenness and spiritual deadness. God loved it. And the measure of that love is not a feeling but an action: He gave His one and only Son.

The new birth is the result of the most costly gift in the history of the universe. The Spirit regenerates, but the basis of that regeneration is the atoning work of Jesus Christ, who was lifted up on the cross so that the judgment we deserved fell on Him, and the life He earned might be given to us.

This is the gospel. This is what makes the new birth possible.

What The New Birth Produces

Jesus says in verse 3 that unless someone is born again, he cannot see the kingdom of God. And in verse 5, he cannot enter it. Seeing and entering. Perception and participation.

The new birth does not merely adjust a person's behavior. It changes what a person can perceive. The person who has been born of the Spirit begins to see what was previously invisible: the reality of God, the beauty of Christ, the weight of sin, the wonder of grace, the hope of glory. This is why two people can sit in the same church service and one walks out transformed while the other walks out unmoved. It is not merely a difference in intelligence or background. It is a difference in whether the Spirit of God has opened the eyes of the heart.

And when a person can see the kingdom, they can enter it. They can live as a citizen of it. They begin to love what God loves, grieve what God grieves, and pursue what God pursues. The new birth is not the end of the journey. It is the beginning of a whole new life.

For those of us who are part of a local church, this has practical implications. Regenerate church membership, the Baptist conviction that the church is made up of people who have genuinely been born again, is not an arbitrary standard. It flows directly from what Jesus teaches here. The church is not a gathering of the morally respectable or the religiously traditional. It is a community of people who have been made alive by the Spirit, who have trusted Christ, who have been baptized as a public declaration of that new life, and who are walking together under the authority of Scripture. That matters. The ordinances we observe, baptism and the Lord's Supper, are not the means of the new birth, but they are the testimony of it. They declare what God has done.

The Invitation

If you are here today and you have never experienced what Jesus is describing, I want to speak to you directly. You do not need to clean yourself up first. You do not need to understand everything. Nicodemus did not understand everything, and Jesus still spoke to him with patience and grace.

What Jesus calls you to is faith. Look to the Son who was lifted up. Trust Him. Not trust in your sincerity, not trust in your church attendance, not trust in your moral record. Trust in Him, in what He did on the cross and what He proved in the resurrection. That is the look of faith. And to everyone who looks to Him in that way, He gives eternal life.

If you have been born again, let this text renew your wonder. You did not produce your own spiritual life. The Spirit of God, in sovereign grace, made you alive. The Son of God, in costly love, made that possible. The Father, in eternal purpose, sent the Son so that you would not perish. That is not a reason for pride. It is a reason for worship that never runs out.

The Lord God omnipotent reigns, and He has loved the world enough to give His Son. Be born again. Believe in Him. And live.

Sources Consulted

Carson, D. A. The Gospel According to John. Pillar New Testament Commentary. Grand Rapids: Eerdmans, 1991.

Kostenberger, Andreas J. John. Baker Exegetical Commentary on the New Testament. Grand Rapids: Baker Academic, 2004.

Morris, Leon. The Gospel According to John. New International Commentary on the New Testament. Grand Rapids: Eerdmans, 1995.

Sproul, R. C. John. St. Andrews Expositional Commentary. Sanford: Reformation Trust, 2009.

Thielman, Frank. Theology of the New Testament. Grand Rapids: Zondervan, 2005.