Job 10:14

Here we have, I. Job's passionate complaints. On this harsh and unpleasant string he harps much, in which, though he cannot be justified, he may be excused. He complained not for nothing, as the murmuring Israelites, but had cause to complain. If we think it looks ill in him, let it be a warning to us to keep our temper better. 1. He complains of the strictness of God's judgment and the rigour of his proceedings against him, and is ready to call it summum jus - justice bordering on severity. (1.) That he took all advantages against him: "If I sin, then thou markest me, Job 10:14.(1.) If I do but take one false step, misplace a word, or cast a look awry, I shall be sure to hear of it. Conscience, thy deputy, will be sure to upbraid me with it, and to tell me that this gripe, this twitch of pain, is to punish me for that." If God should thus mark iniquities, we should be undone; but we must acknowledge the contrary, that, though we sin, God does not deal in extremity with us. (2.) That he prosecuted those advantages to the utmost: Thou wilt not acquit me from my iniquity. While his troubles he could not take the comfort of his pardon, nor hear that voice of joy and gladness; so hard is it to see love in God's heart when we see frowns in his face and a rod in his hand. (3.

— Matthew Henry's Concise Commentary (public domain)

Job is perplexed because God "marks" every sin of his with such ceaseless rigor. Whether "wicked" (godless and a hypocrite) or "righteous" (comparatively sincere), God condemns and punishes alike.

— Jamieson-Fausset-Brown Commentary (public domain)