I know that God's mercy is infinite. No matter how sinful we are, if we want to reconcile with him, as long as we repent, he is eager and ready to take us back. I really felt this great mercy at Mass this morning during consecration of the bread and wine when I heard the priest repeat these words of Jesus:
"Take this, all of you, and eat of it, for this is my body which will be given up for you" and "Take this, all of you, and drink from it, for this is the chalice of my blood, the blood of the new covenant, which will be poured out for you and for many for the forgiveness of sins. Do this in memory of me."
Here is the giving of the Lord himself to us and there cannot be any greater proof of his mercy than this.