Communion Antiphon, Mt 9:13:I desire mercy, not sacrifice, says the Lord, for I did not come to call the just but sinners.Not only fasting, private prayer, and almsgiving, but also corporate worship helps to form the thorough Christian. All worship centers in Christ, the one mediator. His presence and priesthood are the hope of the world Through Him as their Head, all His members give the Trinity due homage, thanksgiving, and reparation. By worshiping together, men express their dependence upon one another and deepen their vital unity.