How to Forgive Someone Who Doesn't Apologize

Even when Jesus was hanging on the cross, he begged God to have mercy on the men who were killing him. He prayed over and over again, father forgives them for they don't know what they are doing. And forgiveness is not easy. How do you forgive someone who hasn't apologized? You take it to the Lord. You pray about it. You ask Him to put that forgiveness in your heart.