“Take and eat; this is My body…Drink from it, all of you. For this is My blood of the new covenant, which is shed for many for the remission of sins” (Matthew 26:26-28).
In partaking with His disciples of the bread and wine, Christ pledged Himself to them as their Re-deemer. He committed to them the new covenant, by which all who receive Him become children of God, and joint heirs with Christ. (Counsels for the Church, p. 298.6)