If thou, LORD, shouldest mark iniquities, O Lord, {b} who shall stand?

(b) He declares that we cannot be just before God but by forgiveness of sins.

Wesley's Notes

130:3 Mark - Observe them accurately and punish them as they deserve. Stand - At thy tribunal.

Jamieson-Fausset-Brown Bible Commentary

3. shouldest mark-or, "take strict account" (Job 10:14; 14:16), implying a confession of the existence of sin.

who shall stand-(Ps 1:6). Standing is opposed to the guilty sinking down in fear and self-condemnation (Mal 3:2; Re 6:15, 16). The question implies a negative, which is thus more strongly stated.

Matthew Henry's Concise Commentary

130:1-4 The only way of relief for a sin-entangled soul, is by applying to God alone. Many things present themselves as diversions, many things offer themselves as remedies, but the soul finds that the Lord alone can heal. And until men are sensible of the guilt of sin, and quit all to come at once to God, it is in vain for them to expect any relief. The Holy Ghost gives to such poor souls a fresh sense of their deep necessity, to stir them up in earnest applications, by the prayer of faith, by crying to God. And as they love their souls, as they are concerned for the glory of the Lord, they are not to be wanting in this duty. Why is it that these matters are so long uncertain with them? Is it not from sloth and despondency that they content themselves with common and customary applications to God? Then let us up and be doing; it must be done, and it is attended with safety. We are to humble ourselves before God, as guilty in his sight. Let us acknowledge our sinfulness; we cannot justify ourselves, or plead not guilty. It is our unspeakable comfort that there is forgiveness with him, for that is what we need. Jesus Christ is the great Ransom; he is ever an Advocate for us, and through him we hope to obtain forgiveness. There is forgiveness with thee, not that thou mayest be presumed upon, but that thou mayest be feared. The fear of God often is put for the whole worship of God. The only motive and encouragement for sinners is this, that there is forgiveness with the Lord.