Sometimes we "know not what we do." There are times when we should simply overlook the sins of those who don't know they've sinned against us, but among Christians the more loving thing to do is humbly point out an offense that the other isn't aware he committed. I'm one of those people who never sees the line until I've crossed it. Maybe it's an Aspergers syndrome thing, I dunno... but I have learned to really appreciate rebuke so I can learn from it and not hurt people unintentionally.

But when I am obstinate and refuse to see my sin or acknowledge the other person's hurt, forgiveness is not what I need. What I need then is a swift kick in the britches! And in time, I learn to appreciate it.