Water baptism is not an OT ritual.
The requirement for everyone to be water baptized in the name of the Lord Jesus began on the day the NT church was birthed. (Acts 2:38)
Peter said, “Repent, and be baptized every one of you in
the name of Jesus Christ for the remission of sins” (Acts
2:38). Remission denotes a release, wiping out, cancellation,
or dismissal. At baptism, God releases, wipes out,
cancels, and dismisses our sins.
Some disagree with this understanding, holding that
baptism is performed because one has already obtained
remission of sins. To them the word for in Acts 2:38
means “because of” or “with a view towards.” It seems
clear, however, that for actually means “to receive” or “in
order to obtain.”
(1) This is the literal meaning one gathers from reading
both the Greek and English texts. The NIV translates
Acts 2:38 as, “Peter replied, Repent and be baptized,
every one of you, in the name of Jesus Christ so that your
sins may be forgiven. . . .”
(2) The context leads to this interpretation. Guilty
sinners asked, “What shall we do?” (Acts 2:37). Peter
answered them by explaining what they needed to do to
receive remission of sins, not by describing optional conduct.
He did not mean, “Repent and be baptized because
you already have received remission of sins.”
(3) Matthew 26:28 records exactly the same Greek
wording when Jesus said, “For this is my blood of the
new testament, which is shed for many for the remission
of sins.” Christ shed His blood so that we might obtain
remission of sins, not because we already have it. The
phrase can point to future remission of sins (as John and
Jesus used it), but it never points back to remission
already obtained.
(4) Many other verses of Scripture describe the role
of baptism in remitting sins.
Baptismal Regeneration?
At this point, we must emphasize that the Bible does
not teach “baptismal regeneration,” for the water and the
ceremony do not have saving power in themselves. Water
baptism is not a magical act; it is without spiritual value
unless accompanied by conscious faith and repentance.
Baptism is important only because God has ordained it
to be so. God could have chosen to remit sin without baptism,
but in the New Testament church He has chosen to
do so at the moment of baptism. Our actions at baptism
do not provide salvation or earn it from God; God alone
remits sins based on Christ’s atoning death. When we
submit to water baptism according to God’s plan, God
honors our obedient faith and remits our sin.