There will be a time when our sins will need to be accounted for, so we pray, “Forgive us our debts, as we also have forgiven our debtors,” in the Lord’s Prayer. In Matthew 18, Jesus teaches the story of the Unmerciful Servant.
This story is a metaphor for our relationship with the true King, Jesus Christ. His provisions are even more generous than the king’s in the story, and just like the servant, we have squandered what He has given to us. God has promised to forgive us our sins through the blood of Jesus Christ, so why would we not extend that same grace to others?