You Must Be Born Again
John 3 introduces us to Nicodemus, a Pharisee and a ruler of the Jews. He came to Jesus by night, acknowledging that Jesus had come from God because of the miracles He performed. Before Nicodemus could even ask his main question, Jesus addressed his greatest need:
“Most assuredly, I say to you, unless one is born again, he cannot see the kingdom of God.” — John 3:3
Nicodemus misunderstood, thinking Jesus was speaking about a second physical birth. Jesus explained:
“Most assuredly, I say to you, unless one is born of water and the Spirit, he cannot enter the kingdom of God.” — John 3:5
He continued:
“That which is born of the flesh is flesh, and that which is born of the Spirit is spirit.” — John 3:6
Then Jesus gave one of the clearest statements in the Bible:
“Do not marvel that I said to you, ‘You must be born again.’” — John 3:7
Nicodemus was deeply religious, morally upright, and highly respected, yet Jesus declared that even he needed a completely new life from God. Entering God’s Kingdom is not achieved through heritage, religious activity, or good works—it requires a supernatural work of the Holy Spirit.
This reminds us that Christianity is not primarily about becoming more religious—it is about becoming a new creation through the work of the Holy Spirit. No amount of church attendance, good deeds, or biblical knowledge can replace the necessity of the new birth. Every believer’s greatest testimony is not simply that they changed their behaviour, but that God transformed their heart. The same Spirit who gives new life continues to shape us into the likeness of Christ each day.
God’s Love Is Revealed Through His Son
Jesus then explained how this new life becomes possible. He reminded Nicodemus of Israel’s experience in the wilderness:
“And as Moses lifted up the serpent in the wilderness, even so must the Son of Man be lifted up.” — John 3:14
Just as the Israelites looked in faith at the bronze serpent and lived (Numbers 21:4–9), sinners must look to Christ in faith for salvation. This leads to one of the most treasured verses in all of Scripture:
“For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life.” — John 3:16
Jesus continued:
“For God did not send His Son into the world to condemn the world, but that the world through Him might be saved.” — John 3:17
He also explained that people are condemned not because Christ refuses to save them, but because they reject the Light:
“And this is the condemnation, that the light has come into the world, and men loved darkness rather than light…” — John 3:19
Those who come to Christ step into the light because they desire God’s truth.
This reminds us that salvation begins with the love of God, is accomplished through the sacrifice of His Son, and is received by faith. The cross is the greatest demonstration of God’s love for humanity. Every person must respond to that love by believing in Christ. Those who trust Him receive eternal life, while those who reject Him remain in spiritual darkness. The invitation of the Gospel remains wonderfully open: “whoever believes in Him.”
Jesus Must Increase
The final section returns to John the Baptist. Some of John’s disciples became concerned because more people were now following Jesus. John responded with remarkable humility:
“A man can receive nothing unless it has been given to him from heaven.” — John 3:27
He reminded them:
“You yourselves bear me witness, that I said, ‘I am not the Christ,’ but, ‘I have been sent before Him.’” — John 3:28
Using the illustration of a wedding, John described Jesus as the Bridegroom and himself as the friend of the Bridegroom whose joy is complete when the Bridegroom arrives. He then made one of the greatest statements on Christian humility:
“He must increase, but I must decrease.” — John 3:30
John recognised that his mission was never to build his own reputation but to exalt Christ. The chapter closes by declaring the absolute supremacy of Jesus:
“The Father loves the Son, and has given all things into His hand.” — John 3:35
And:
“He who believes in the Son has everlasting life…” — John 3:36
This reminds us that the goal of the Christian life is not to make ourselves more important but to make Christ more visible. Like John the Baptist, we should rejoice whenever Jesus is honoured, even if we receive less attention. A healthy Christian life is marked by decreasing self-centredness and increasing Christ-centredness. As He becomes greater in our thoughts, priorities, and actions, others will be drawn to Him rather than to us.
Deeper Waters
John 3 presents Jesus as the giver of the new birth, the lifted-up Son who secures eternal life, and the heavenly Bridegroom who alone deserves all glory. The chapter reveals that entrance into God’s Kingdom is entirely a work of God’s grace, centred on the person and work of Jesus Christ.
The conversation with Nicodemus highlights the inadequacy of religion without regeneration. Nicodemus possessed everything that first-century Judaism could offer: learning, morality, influence, and devotion. Yet Jesus declared that he still lacked the one thing that mattered most—the new birth. This echoes the promises of the New Covenant in Ezekiel 36:25–27, where God promises to cleanse His people, give them a new heart, and put His Spirit within them. The Kingdom of God is entered not by natural birth or religious privilege but by the sovereign work of the Holy Spirit.
Jesus compares the Spirit’s work to the wind:
“The wind blows where it wishes… So is everyone who is born of the Spirit.” (John 3:8)
The comparison emphasises both the mystery and the sovereignty of God’s work. We cannot control the wind, yet we clearly see its effects. Likewise, the Spirit’s work is invisible but unmistakable, producing transformed lives that bear the fruit of genuine faith.
The reference to the bronze serpent is profoundly significant. In Numbers 21, the Israelites were dying because of their sin, yet God provided a means of healing. Those who looked in faith at the serpent lived. Jesus declares that this event foreshadowed His own crucifixion. The Son of Man would be “lifted up” on the cross so that all who look to Him in faith might receive eternal life. What appeared to be an instrument of shame would become the means of salvation for the world.
John 3:16 stands at the heart of the Gospel. God’s love is not merely an emotion but a sacrificial action:
**”He gave His only begotten Son.”**
The Father’s giving culminates at the cross, where justice and mercy meet. Salvation is offered to “whoever believes”, demonstrating the universal scope of the Gospel invitation while maintaining that Christ alone is the way of salvation.
Jesus’ teaching about light and darkness continues one of John’s major themes introduced in chapter 1. Light represents God’s truth, holiness, and revelation, while darkness symbolises sin, unbelief, and rebellion. The tragedy is not that light has failed to shine but that sinful humanity naturally prefers darkness. Yet those whom God draws gladly come into the light, not because they are already righteous, but because they desire the transforming truth found in Christ.
John the Baptist’s declaration,
**”He must increase, but I must decrease,”**
provides a timeless model for Christian discipleship and ministry. John’s joy was complete because his purpose was fulfilled when people followed Jesus rather than himself. His imagery of the Bridegroom draws on the Old Testament portrayal of God as the husband of His covenant people (Isaiah 54; Hosea 2). Jesus is the long-awaited Bridegroom whose coming inaugurates the joyful relationship between Christ and His redeemed people—a theme that reaches its fulfilment in the marriage supper of the Lamb (Revelation 19).
The chapter closes by affirming Christ’s absolute supremacy:
**”The Father loves the Son, and has given all things into His hand.”**
The One who offers eternal life is not merely another teacher among many; He is the beloved Son to whom all authority has been entrusted. Therefore, the response to Jesus is decisive. Faith in the Son brings everlasting life, while rejection leaves a person under God’s righteous judgment. There is no neutral response to Christ.
John 3 encourages us to: re.joice in the miracle of the new birth, – depend daily upon the Holy Spirit’s transforming work, – look continually to the cross as the foundation of their hope, – walk in the light through repentance and obedience, – seek Christ’s glory above personal recognition, – and confidently proclaim God’s offer of eternal life to everyone who believes.
Ultimately, John 3 points us to Jesus Christ, the only One who can give new birth, the Son of Man lifted up for the salvation of the world, the perfect revelation of the Father’s love, and the heavenly Bridegroom who calls a people to Himself. Through His cross and resurrection, He makes it possible for sinners to become children of God, receive everlasting life, and enter His Kingdom by the power of the Holy Spirit. Every true Christian life begins with His grace, is sustained by His Spirit, and exists for His glory alone.