To partake of the Lord’s supper is a supremely serious thing

^23-25 The teaching I gave you was given me personally by the Lord himself, and it was this: the Lord Jesus, in the same night in which he was betrayed, took bread and when he had given thanks he broke it and said, “Take, eat, this is my body which is being broken for you. Do this in remembrance of me.” Similarly when supper was ended, he took the cup saying, “This cup is the new agreement in my blood: do this, whenever you drink it, in remembrance of me.

^26-27 This can only mean that whenever you eat this bread or drink of this cup, you are proclaiming that the Lord has died for you, and you will do that until he comes again. So that, whoever eats the bread or drinks the wine without due thought is making himself like one of those who allowed the Lord to be put to death without discerning who he was.