"Now unless the speaker is God, [forgiving sins] is really so preposterous as to be comic. We can all understand how a man forgives offense against himself. You tread on my toe and I forgive you, you steal my money and I forgive you. But what should we make of a man, himself unrobbed and untrodden on, who announced that he forgave you for treading on another man's toes and stealing other men's money? Asinine fatuity is the kindest description we should give of this conduct. Yet this is what Jesus did. He told people that their sins were forgiven, and never waited to consult all the other people whom their sins had undoubtedly injured. He unhesitatingly behaved as if He was the party chiefly concerned, the person chiefly offended in all offense. This makes sense only if He really was God whose laws are broken and whose love is wounded in every sin. In the mouth of any speaker who is not God, these words would imply what I can only regard as a silliness and conceit unrivaled by any other character in history."
Mere Christianity - C.S. Lewis