Albert Barnes Commentary Proverbs 17:5

"Whoso mocketh the poor reproacheth his Maker; [And] he that is glad at calamity shall not be unpunished." — Proverbs 17:5 (ASV)

He that is glad at calamities - A temper common at all times as the most hateful form of evil; the Greek ἐπιχαιρεκακία epichairekakia. The sins spoken of in both clauses occur also in Job’s vindication of his integrity (Proverbs 31:13, Proverbs 31:29).