1 Corinthians 11:29-32

Mace(i) 29 for he that eats and drinks in a disrespectful manner, not discriminating the Lord's body, eateth and drinketh to his own punishment. 30 hence it is, that many are weak and sickly among you, and no small number now sleep in their graves. 31 for if we made such a discrimination, we should not be punished. 32 but when we are punished, we are chastised by the Lord, that we may not be condemned with the world.