Verse 30. - Neither have I suffered my mouth to sin by wishing a curse to his soul. Much less, Job means, have I gone beyond the thought to the word, and imprecated a curse upon him with my mouth, as the manner of most hen is towards their enemies (see 2 Samuel 16:5; 1 Samuel 17:43; Nehemiah 13:25; Psalm 109:28; Jeremiah 15:10, etc).

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.Neither have I suffered my mouth to sin,.... Which, as it is the instrument of speech, is often the means of much sin; particularly of cursing men, and expressing much bitterness against enemies; but Job laid an embargo upon it, kept it as with a bridle, restrained it from uttering any evil, or wishing any to his worst adversaries; which is difficult to do, when provocations are given, as follows:

by wishing a curse to his soul; not to his soul as distinct from his body, being the superior excellency and immortal part; that it be everlastingly damned, as wicked men wish to their own souls, and the souls of others, but to his person, wishing some calamity might befall him, some disease seize upon him, or that God would take him away by death: Job would never suffer himself to wish anything of this kind unto his enemy.