Matthew Poole and continuators on Job 34:37

37. For he addeth rebellion unto his Sin , he clappeth his hands amongst us, and multiplieth his words against God .

He sinned before, as other ways, so by impatience under his afflictions, which may be ascribed to humane infirmity; but now he is grown obstinate and incorrigible, and instead of repenting, and humbling himself for his sins he excuseth them, and justifieth himself and accuseth the blessed God. Or thus For otherwise, unless he be throughly tried and rebuked, he will add rebellion unto his sin, he will break forth into open rebellion against God, and (as it follows) he will clap, &c. For the Hebrew words are of the future tense, although such are oft rendred by the past tense.

In token of joy and victory, as this phrase is used, Psal. 47. 1. & 98. 8. insulting and triumphing not onely over us, as if none of us were able to answer him, but in a sort over God himself, inasmuch as he hath again and again desired leave of God to debate his cause with or before him, and in that case did not doubt to maintain it, but could not obtain the favour or justice of a fair hearing.

Whereas the reverence which he oweth to God and his infinite distance from him should teach him to be very modest and sparing in his speeches of God, Iob on the contrary poureth forth whole flouds of bold and presumptuous expostulations with God and reflections upon Gods proceedings with him.