1 Corinthians 11:27-32

27Wherefore 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. 28But let a man prove himself, and so let him eat of the bread, and drink of the cup. 29For he that eateth and drinketh, eateth and drinketh judgment unto himself, if he discern not the body. 30For this cause many among you are weak and sickly, and not a few sleep. 31But if we discerned ourselves, we should not be judged. 32But when we are judged, we are chastened of the Lord, that we may not be condemned with the world.