Not only those that do actually profess faith in and obedience unto Christ,[a] but also the infants of one or both believing parents are to be baptized.[b]
a:
Mark 16:15-16
Acts 8:37-38
b:
Genesis 17:7
Genesis 17:9
Galatians 3:9
Galatians 3:14
Colossians 2:11-12
Acts 2:38-39
Romans 4:11-12
Matthew 28:19
Mark 10:13-16
Luke 18:15
1 Corinthians 7:14