Matthew 6:12
and forgive us our debts as we forgive our debtors;
Matthew 6:14-15
For if you forgive men their offenses, your heavenly Father will forgive you;
Matthew 18:25-35
And he having nothing to pay, the lord commanded him to be sold, and his wife and children, and all that he had, and payment to be made.
Luke 6:34-38
And if you lend to those from whom you hope to receive, what thanks have you? sinners also lend to sinners, to receive back as much again.
Luke 7:42
And having nothing to pay, he gave [the debt] to both. Tell me, therefore, which of them will love him most?
James 2:13
For he shall have judgment without mercy who shows not mercy; mercy rejoices over judgment.