Bear with each other and forgive one another if any of you has a grievance against someone. Forgive as the Lord forgave you.
— Colossians 3:13

The key to forgiving others is remembering how much God has forgiven you. Is it difficult for you to forgive someone who has wronged you a little when God has forgiven you so much? Realizing God's infinite love and forgiveness can help you love and forgive others.
http://www.barbaralehrman.com/