God may not forgive without repentance, but we always ought to because how less perfect are we? We’re also sinners, and we have to set an example of what it’s like to be forgiven.
Definitely no Biblical scholar here, but I've seen it argued that ignorance of the law or a misguided belief that one is doing the right thing should not be held against you, while overt malice is another thing entirely.
That said, his gesture was noble & an act of turning the other cheek, whether it ultimately has saving value or not…
“Forgive us. As WE forgive those who trespass against US.” It’s all right there in the Bible. In fact, we’re supposed to forgive 770 times. I’ve never had anyone do something to me 770 times so I don’t know what the commandment is if it hits 771.
I can forget, but if someone wants to restore his relationship with me, he must say he’s sorry and ask for forgiveness.
When I’m wrong, that’s what I do.