I Corinthians 11:30

But let a man examine himself, and so let him eat of the bread, and drink of the cup.

For he who eats and drinks eats and drinks judgment to himself, if he does not discern the body.

For if we discerned ourselves, we would not be judged.

But when we are judged, we are punished by the Lord, that we may not be condemned with the world.