Job 34:37 - Joseph Benson’s Commentary on the Old and New Testaments

He addeth rebellion unto his sin He sinned before by impatience under his afflictions, but now he is grown obstinate, and, instead of humbling himself for his sins, he justifies himself, and accuses the blessed God. He clappeth his hands among us In token of victory, insulting and triumphing; and multiplieth his words against God In effect, though not directly.