In the Bible, “forgiveness of sins” is never actually defined. It’s like the reader/hearer (when the apostles told people in person “be baptized for the forgiveness of sins”) is supposed to already understand what it means. I guess the first thing to do is define “sins” and “forgiveness.”
I don’t really understand…
I think that everyone knew what sin is (ten commandments), and what forgiveness is. Therefore it is not a stretch to combine both.
Thanks SonSearcher. I was over-thinking it. This answers my question.