Matthew 18:33 (KJV)

But the same servant went out, and found one of his fellowservants, which owed him an hundred pence: and he laid hands on him, and took him by the throat, saying, Pay me that thou owest.

And his fellowservant fell down at his feet, and besought him, saying, Have patience with me, and I will pay thee all.

And he would not: but went and cast him into prison, till he should pay the debt.

So when his fellowservants saw what was done, they were very sorry, and came and told unto their lord all that was done.

Then his lord, after that he had called him, said unto him, O thou wicked servant, I forgave thee all that debt, because thou desiredst me:

And his lord was wroth, and delivered him to the tormentors, till he should pay all that was due unto him.

So likewise shall my heavenly Father do also unto you, if ye from your hearts forgive not every one his brother their trespasses.