Infant baptism is supported by the following verses of scripture:
Then little children were being brought to him in order that he might lay his hands on them and pray. The disciples spoke sternly to those who brought them; but Jesus said, "Let the little children come to me, and do not stop them;
People were bringing even infants to him that he might touch them; and when the disciples saw it, they sternly ordered them not to do it.
But Jesus called for them and said, “Let the little children come to me, and do not stop them;”
In him also you were circumcised with a spiritual circumcision, by putting off the body of the flesh in the circumcision of Christ when you were buried with him in
baptism, you were also raised with him through faith in the power of God, who raised him from the dead. (i.e.,baptism replaces circumcision and children were circumcised as infants)
Scripture describes entire households that were baptized such as those of the Roman jailer, Lydia, and Stephanes. Scripture does not indicate that children were not included.
Luke 1 :15
The angel Gabriel says that John the Baptist , “even before his birth he will be filled with the Holy Spirit.”
This last verse concerning John the Baptist is particularly important. We have a verse in scripture that explicitly speaks about an infant being filled with the Holy Spirit even from his mother’s womb. What did John the Baptist do to earn this? Does this verse indicate that John the Baptist had faith even from his mothers womb? No, faith is necessary for those that have reached the age of reason when they can then take ownership of their faith. Faith for infants is communal through baptism just as circumcision was for the Jews and their infants.
There is another verse that may also apply in this regard. In Acts 2:38 it says, "And Peter said to them, “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.” Then in verse 39 it says, “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.” Combine all of these verses with the fact that infant baptism has been practiced from the days of the apostles forward and there should be no doubt that it is both proper and necessary.