1 Corinthians 11:28-30 Young's Literal Translation Of The Holy Bible (YLT98)

28. and let a man be proving himself, and so of the bread let him eat, and of the cup let him drink;

29. for he who is eating and drinking unworthily, judgment to himself he doth eat and drink--not discerning the body of the Lord.

30. Because of this, among you many [are] weak and sickly, and sleep do many;

1 Corinthians 11