1 Corinthians 11:27

11:27 For this reason, whoever eats the bread or drinks the cup of the Lord in an unworthy manner will be guilty of the body and blood of the Lord.

1 Corinthians 11:29

11:29 For the one who eats and drinks without careful regard ¹  for the body eats and drinks judgment against himself.

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¹ tn The word more literally means, “judging between, recognizing, distinguishing.”