1 Corinthians 11:27-34
11:27 For this reason, whoever eats the bread or drinks the cup of the Lord in an unworthy manner will be guilty of the body and blood of the Lord.
11:28 A person should examine himself first, and in this way let him eat the bread and drink of the cup.
11:29 For the one who eats and drinks without careful regard for the body eats and drinks judgment against himself.
11:30 That is why many of you are weak and sick, and quite a few are dead.
11:31 But if we examined ourselves, we would not be judged.
11:32 But when we are judged by the Lord, we are disciplined so that we may not be condemned with the world.
11:33 So then, my brothers and sisters, when you come together to eat, wait for one another.
11:34 If anyone is hungry, let him eat at home, so that when you assemble it does not lead to judgment. I will give directions about other matters when I come.