Matthew 18:32-35

So he called the servant in. ‘You worthless slave!’ he said. ‘I forgave you the whole amount you owed me, just because you asked me to. You should have had mercy on your fellow-servant, just as I had mercy on you.’ The king was very angry, and he sent the servant to jail to be punished until he should pay back the whole amount.” And Jesus concluded, “That is how my Father in heaven will treat every one of you unless you forgive your brother from your heart.”