When the hour had come, He reclined at the table, and the apostles with Him. And He said to them, “I have earnestly desired to eat this Passover with you before I suffer; for I say to you, I shall never again eat it until it is fulfilled in the kingdom of God.” And when He had taken a cup and given thanks, He said, “Take this and share it among yourselves; for I say to you, I will not drink of the fruit of the vine from now on until the kingdom of God comes.” And when He had taken some bread and 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 in the same way He took the cup after they had eaten, saying, “This cup which is poured out for you is the new covenant in My blood." Luke, Ch. 22, vs. 14-20, NASBWe do this in remembrance of Him. Remembering His love for us, his devotion to us, His sacrifice for us.
I was raised in, and still attend, churches of the Restoration Movement ; Churches of Christ as a child and young adult, and a Disciples of Christ congregation today. In these churches, The Lord's Supper is the pinnacle of the worship service, the prime reason that we meet each Sunday. "For as often as you eat this bread and drink the cup, you proclaim the Lord's death until He comes." 1 Cor., Ch. 11, v. 26, NASB.