The Bible never mentions christening, and while it may serve as a cultural or traditional practice, it is not a biblical teaching. Naming and dedication may be meaningful, but they were never connected to the forgiveness of sin, which always came through faith and obedience to God (Genesis 15:6; 1 Samuel 1:27–28). All are born sinful (Psalm 51:5; Romans 5:12) and only personal faith in Jesus’ death and resurrection can cleanse us from sin (Ephesians 2:8–9; John 3:16–21). Christ commanded baptism (Matthew 28:19–20), but it is a sign of repentance and new life in Him, not a ritual that saves (Acts 4:12; Matthew 3:14–16). Infants cannot yet understand sin or choose repentance, so christening as spiritual cleansing is unbiblical. However, dedicating children to God, as Hannah did with Samuel, can be a meaningful act of commitment for parents, pointing forward to the child’s future faith. Ultimately, salvation is always a personal decision, and only Christ—not ceremony—has the power to make us right with God.
In some liturgical traditions, infants and small children often go through a christening ceremony, during which they are given their "Christian" name and welcomed into the congregation of the church. Sometimes the ceremony is private, including only close friends and family; other times it happens in front of the entire congregation, at the church.
Christening is not in the Bible, and depending on how the ceremony is perceived, it is not scriptural. If the christening ceremony is a naming ceremony and represents the symbolic inclusion of the infant into his new community, there is nothing unbiblical about it. A baby dedication is similar. However, christening is often thought of and practiced as a spiritual cleansing–a sacrament that baptizes the child from original sin. In this way, this practice is unbiblical because cleansing from sin can only take place by placing one’s faith in Jesus’ death and resurrection for the forgiveness of sins. No ceremony can do this and certainly not for an infant who cannot understand sin and repentance.
Because of its spiritual importance, baptism should not be taken lightly. Christening an infant is a tradition of the church and is not found anywhere in the Bible. Christening isn’t sinful, but it does not make a person right before God, nor does it bring about salvation. Those who believe they are saved because of their christening, might not realize the eternal consequences of sin later in life and fail to trust Jesus Christ for salvation. The Bible calls us to genuine faith in Christ, followed by baptism as an outward sign of that faith. While christening may serve as a cultural or traditional practice, it should never be mistaken for the saving work of Christ, who alone has the power to cleanse us from sin and bring us into God’s family.