This also were an iniquity to be punished by the judge: for I should have denied the God that is {t} above.

(t) By putting confidence in anything but in him alone.

Wesley's Notes

31:28 The judge - The civil magistrate; who being advanced and protected by God, is obliged to maintain and vindicate his honour, and consequently to punish idolatry. Denied God - Not directly but by consequence, because this was to rob God of his prerogative, by giving to the creature, that worship which is peculiar to God.

Jamieson-Fausset-Brown Bible Commentary

28. The Mosaic law embodied subsequently the feeling of the godly from the earliest times against idolatry, as deserving judicial penalties: being treason against the Supreme King (De 13:9; 17:2-7; Eze 8:14-18). This passage therefore does not prove Job to have been subsequent to Moses.

Matthew Henry's Concise Commentary

31:24-32 Job protests, 1. That he never set his heart upon the wealth of this world. How few prosperous professors can appeal to the Lord, that they have not rejoiced because their gains were great! Through the determination to be rich, numbers ruin their souls, or pierce themselves with many sorrows. 2. He never was guilty of idolatry. The source of idolatry is in the heart, and it corrupts men, and provokes God to send judgments upon a nation. 3. He neither desired nor delighted in the hurt of the worst enemy he had. If others bear malice to us, that will not justify us in bearing malice to them. 4. He had never been unkind to strangers. Hospitality is a Christian duty, 1Pe 4:9.