1 Corinthians 11 : 23 For I have received of the Lord that which also I delivered unto you, That the Lord Jesus the same night in which he was betrayed took bread: 24 And when he had given thanks, he brake it, and said, Take, eat: this is my body, which is broken for you: this do in remembrance of me. 25 After the same manner also he took the cup, when he had supped, saying, This cup is the new testament in my blood: this do ye, as oft as ye drink it, in remembrance of me. 26 For as often as ye eat this bread, and drink this cup, ye do shew the Lord’s death till he come.

These verse of scripture should be very failure  to any  Christian if  they have ever partook of the Lord’s Supper in the spirit it was to taken in. Paul here is reminding the Corinthians that these were words spoken by Jesus Himself as he took His last meal with the disciples. Jesus let His disciples know that the cup symbolized the blood he was to shed for all mankind and the bread was His body that sacrificed for our salvation. We do this today because it is to remind us the what Jesus did for us until He comes again in all His glory.