When the hour came, [Jesus] took his place at the table, and the apostles with him. He said to them, “I have eagerly desired to eat this Passover with you before I suffer….” Then he took a loaf of bread, and when he had given thanks, he broke it and gave it to them, saying, “This is my body, which is given for you. Do this in remembrance of me.” And he did the same with the cup after supper, saying, “This cup that is poured out for you is the new covenant in my blood.” (Luke 22:14-15, 19-20)
And during supper Jesus, knowing that the Father had given all things into his hands, and that he had come from God and was going to God, got up from the table, took off his outer robe, and tied a towel around himself. Then he poured water into a basin and began to wash the disciples’ feet and to wipe them with the towel that was tied around him.
“You call me Teacher and Lord—and you are right, for that is what I am. So if I, your Lord and Teacher, have washed your feet, you also ought to wash one another’s feet. For I have set you an example, that you also should do as I have done to you. Very truly, I tell you, servants are not greater than their master, nor are messengers greater than the one who sent them. If you know these things, you are blessed if you do them.”
After saying this Jesus was troubled in spirit, and declared, “Very truly, I tell you, one of you will betray me.” (John 13:2-5, 13-17, 31)
Almighty Father, whose dear Son, on the night before he suffered, instituted the Sacrament of his Body and Blood: Mercifully grant that we may receive it thankfully in remembrance of Jesus Christ our Lord, who in these holy mysteries gives us a pledge of eternal life; and who now lives and reigns with you and the Holy Spirit, one God, for ever and ever. Amen. (Book of Common Prayer)