In today's Gospel reading from Mark 11, Jesus said to his disciples, "When you stand to pray, forgive anyone against whom you have a grievance, so that your heavenly Father may in turn forgive you your transgressions." Normally, if I have knowingly committed a sin, I would repent and ask the Lord to forgive me. Now, if someone trespasses against me, I would hold a grievance against the person, believing that he is the sinner. Jesus makes it clear here that if I do not forgive that person, I too sin. This is good to know and remember.