In Acts 22:16 Ananias told Saul “arise, and be baptized, and wash away thy sins, calling on the name of the Lord.” Do you see how being baptized is equated with “calling on the name of the Lord” in that verse? We can see the same thing in Acts 2 where in verse 21 people are told that whoever will call on the name of the Lord will be saved, while in verse 38 the details of how you call on God for salvation from sin are expressed as repenting and being baptized (after believing – verses 36-37). God has told us we have to be baptized to be saved (Mark 16:16, I Peter 3:21), therefore, the way we call on God to save us from our sins, is by being baptized (as we saw in Acts 22:16).
Having concluded that, notice the one being baptized is the one calling on God, and infants cannot make such a decision to call on God. This proves infants cannot be scripturally baptized, because scriptural baptism is a decision to call on (ask) God for the forgiveness of sins, and infants cannot make such a decision. The Bible nowhere authorizes infant baptism.