Luke 22:19–20
“And He took bread, gave thanks and broke it, and gave it to them, saying, ‘This is My body which is given for you; do this in remembrance of Me.’ Likewise He also took the cup after supper, saying, ‘This cup is the new covenant in My blood, which is shed for you.’”
Christ chose us to be in fellowship with Him. He is present in Holy Communion. He gives us eternal life. We give thanks and give ourselves to Him. He testifies that He will return soon and urges us to contribute to the unity of the Church.