When I was in college, I used run into this guy who had this saying he'd repeat all the time.
He'd say, "You got grace from God, so don't expect any from me."
One time he said that to me and I said, "I disagree. We got grace from God, so we should be gracious to others."
That was the last time he and I spoke. Haha. Just kidding.
But all of us have made mistakes and been in need of grace.
In short, we've all needed a second chance.