1 Cor 11:27-28 27 Wherefore whosoever shall eat the bread or drink the cup of the Lord in an unworthy manner, shall be guilty of the body and the blood of the Lord. 28 But let a man prove himself, and so let him eat of the bread, and drink of the cup.
1 Cor 11:25 In like manner also the cup, after supper, saying, This cup is the new covenant in my blood: this do, as often as ye drink (it), in remembrance of me.