What is the Sacrament of the Altar? It is the true body and blood of our Lord Jesus Christ under the bread and wine, instituted by Christ himself for us Christians to eat and to drink. Where is this written? The holy evangelists Matthew, Mark, and Luke, and St. Paul write thus: “In the night in which he was betrayed, our Lord Jesus took bread, and gave thanks, broke it, and gave it to his disciples, saying: Take and eat; this is my body, given for you. Do this for the remembrance of me. Again, after supper, he took the cup, gave thanks, and gave it for all to drink, saying: This cup is the new covenant in my blood, shed for you and for all people for the forgiveness of sin. Do this for the remembrance of me.”