Psalms 130:3

“If thou, Lord, shouldest mark iniquities, etc.] Or “observe”f1778 them. Not but that God does observe the sins of men: he sees all the evil actions of bad men done in the dark, which cannot hide them from him; and all the iniquities of good men, so as to correct and chastise for them, but not with his eye of vindictive justice. Or “keep”f1779 them; should he keep a watchful eye over them, make strict inspection into them, enter into a critical examination of them, and of all their aggravated circumstances; should he keep them in mind and memory, retain them in the book of his remembrance; should he lay them up, and keep them sealed among his stores, in order to be brought to light, and…”

“If thou, Lord, shouldest mark iniquities - If thou shouldst observe, note, attend to, regard all the evil that I have done. The Hebrew word means properly to keep, to watch, to guard. The word, as used here, refers to that kind of vigilance or watchfulness which one is expected to manifest who is on guard; who keeps watch in a city or camp by night. The idea is, If God should thus look with a scrutinizing eye; if he should try to see all that he could see; if he should suffer nothing to escape his observation; if he should deal with us exactly as we are; if he should overlook nothing, forgive nothing, we could have no hope. Who shall stand? - Who shall stand upright? Who could stand before…”

“Mark - Observe them accurately and punish them as they deserve. Stand - At thy tribunal. Psalms 130:4”

“130:3 The psalmist knows that his sins make him guilty and deserving of God’s judgment.”

“shouldest mark: Psa 143:2; Job 9:2, Job 9:3, Job 9:20, Job 10:14, Job 15:14; Isa 53:6; Joh 8:7-9; Rom 3:20-24 Psalms 130:4”