A.T. Robertson Commentary 1 Corinthians 11:29

"For he that eateth and drinketh, eateth and drinketh judgment unto himself, if he discern not the body." — 1 Corinthians 11:29 (ASV)

If he discern not the body (μη διακρινων το σωμα). So-called conditional use of the participle, "not judging the body." Thus he eats and drinks judgment (κριμα) on himself. The verb δια-κρινω is an old and common word, our

dis-cri-minate , to distinguish. Eating the bread and drinking the wine as symbols of the Lord's body and blood in death probes one's heart to the very depths.