What is the Biblical basis for the Catholic teaching that infant baptism cleanses from original sin? The Catholic Church, possibly the Orthodox Churches, and even some Protestant churches practice Infant Baptism.  However, I understand that Catholicism teaches that infant baptism cleanses the infant from original sin, but I am unaware of where this doctrine draws its biblical foundation.  So, that is my question:

What is the Biblical basis for the Catholic doctrine that infant baptism cleanses from original sin?
There are biblical references to baptism as imparting new life in Christ on which to base the practice.

And Peter said to them, &quot;Repent, and be baptized every one of you in the name of Jesus Christ for the forgiveness of your sins; and you shall receive the gift of the Holy Spirit. For the promise is to you and to your children and to all that are far off, every one whom the Lord our God calls to him.&quot; And he testified with many other words and exhorted them, saying, &quot;Save yourselves from this crooked generation.&quot; [Acts 2:38–40]
We were buried therefore with him by baptism into death, so that as Christ was raised from the dead by the glory of the Father, we too might walk in newness of life. [Romans 6:4]
God's patience waited in the days of Noah, during the building of the ark, in which a few, that is, eight persons, were saved through water. Baptism, which corresponds to this, now saves you, not as a removal of dirt from the body but as an appeal to God for a clear conscience, through the resurrection of Jesus Christ. [1 Peter 3:20–21]

The Church cannot deny the grace imparted by baptism to a child simply because he is a child.

1250 Born with a fallen human nature and tainted by original sin, children also have need of the new birth in Baptism to be freed from the power of darkness and brought into the realm of the freedom of the children of God, to which all men are called [Cf Col 1:12–14]. [Catechism of the Catholic Church]

The Catechism holds that infant baptism is &quot;an immemorial tradition&quot;, practised from the earliest days of the Church recorded in Acts.

1252 The practice of infant Baptism is an immemorial tradition of the Church. There is explicit testimony to this practice from the second century on, and it is quite possible that, from the beginning of the apostolic preaching, when whole &quot;households&quot; received baptism, infants may also have been baptized [Cf Acts 16:15, 33; Acts 18:8; 1 Cor 1:16]