Other New Testament scriptures bear witness that
the Apostolic Church acknowledged the use of the power
to forgive sins.
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 will receive the gift of the holy Spirit."
1 John 1:9
If we acknowledge our sins, he is faithful and just and
will forgive our sins and cleanse us from every wrongdoing.
1 John 2:12
I am writing to you, children, because your sins have
been forgiven for his name's sake.