Matthew 18:29-35
18:29 Then his fellow slave threw himself down and begged him, ‘Be patient with me, and I will repay you.’
18:30 But he refused. Instead, he went out and threw him in prison until he repaid the debt.
18:31 When his fellow slaves saw what had happened, they were very upset and went and told their lord everything that had taken place.
18:32 Then his lord called the first slave and said to him, ‘Evil slave! I forgave you all that debt because you begged me!
18:33 Should you not have shown mercy to your fellow slave, just as I showed it to you?’
18:34 And in anger his lord turned him over to the prison guards to torture him until he repaid all he owed.
18:35 So also my heavenly Father will do to you, if each of you does not forgive your brother from your heart.”