A man whom I appointed to utter destruction - or to חרם chērem, i. e., a man on whom My curse had been laid (Leviticus 27:28 note).
Related Commentaries of 1 Kings 20:42
1 Kings 20:42
42 And he said unto him, Thus saith the LORD, Because thou hast let go out of thy hand a man whom I appointed to utter destruction, therefore thy life shall go for his life, and thy people for his people.