Lord help this person every time the enemy accosts them with unforgiving feelings, to remember how much Jesus loved us that he died on the cross for our sins. How more should we forgive others if we want to be forgiven ourselves. Help this person learn to be a humble and forgiving person just as Jesus did for us. I pray in the merciful name of Jesus Christ, amen.
Read the prayer Our Father which Jesus taught us to pray. It says, forgive us our transgressions as we forgive those who transgress against us. If we want our prayers to be answered we then should be a forgiving person as even the son of God was able to forgive us.