1 Corinthians 11:27

Divines agree, that the unworthiness here spoken of, respecteth not the person of the receiver so much as the manner of the receiving; in which sense, a person that is worthy may receive this ordinance unworthily: it is variously expounded, without due religion and reverence, without faith and love, without proposing a right end in the action, under the guilt of any known sin not repented of, &c. Shall be guilty of the body and blood of the Lord; shall incur the guilt of the profanation of this sacred institution; for an abuse offered to a sign, reacheth to that of which it is a sign; as the abuse of a king's seal, or picture, is justly accounted an abuse of the king himself, whose seal and picture it is. Some carry it higher; he shall be punished, as if he had crucified Christ, the profanation of Christ's ordinance reflecting upon Christ himself.