Mark 16:15-16 – Belief is a prerequisite for baptism.
John 3:35 – See I Peter 1:22-25
Acts 2:36-38 – People must repent and be baptized for the forgiveness of sins. Compare the language in Matthew 26:28. Arguments have been made about the word “for” but the underlying Greek word eis always points forward.
Acts 11:13-14; 10:47-48
Acts 22:16 – Compare Acts 9:3-4, 8-9. Saul believed at this point but still needed to have his sins forgiven.