Why do Catholics baptize babies?

Catholics baptize infants because they believe Baptism is the sacrament that cleanses original sin, initiates one into the Christian community, and imparts sanctifying grace. The practice reflects the Church’s understanding of the sacrament’s importance and the inclusion of children within God’s covenant. Here are some foundational reasons and scriptural support for infant baptism:

Original Sin

Catholics believe that every person inherits original sin from Adam and Eve, and that Baptism is essential for cleansing this sin and starting a new life in Christ (see Romans 5:12–19).

Inclusion in the Covenant

Just as Jewish infants entered into the Old Covenant through circumcision (Leviticus 12:3), children of Christian families are welcomed into the New Covenant through Baptism. Colossians 2:11-12 draws a parallel between circumcision and Baptism, illustrating their covenantal nature.

Whole Households Baptized

Scripture provides examples of entire households being baptized, which likely included children. Acts 16:15 describes Lydia’s household being baptized, and Acts 16:33 notes the baptism of the Philippian jailer’s entire household.

Jesus’ Welcoming of Children

Jesus demonstrated a special love for children and inclusion in His ministry. In Mark 10:14, Jesus said, “Let the children come to me; do not prevent them,” indicating that the Kingdom of God is open to them.