If you should mark iniquities who could stand? Calvin on Law & Gospel

From his commentary on Psalm 130:

Whenever God then exhibits the tokens of his wrath, let even the man who seems to others to be the holiest of all his fellows, descend to make this confession, that should God determine to deal with us according to the strict demands of his law, and to summon us before his tribunal, not one of the whole human race would be able to stand...But the Prophet...confesses, after having thoroughly examined himself, that if of the whole human race not even one can escape eternal perdition, this instead of lessening rather increased his obnoxiousness to punishment.

Whoever, as if he had said, shall come into the presence of God, whatever may be his eminence for sanctity, he must succumb and stand confounded, what then will be the case as to me, who am not one of the best?

The right application of this doctrine is, for every man to examine in good earnest his own life by the perfection which is enjoined upon us in the law. In this way he will be forced to confess that all men without exception have deserved everlasting damnation; and each will acknowledge in respect to himself that he is a thousand times undone.

Farther, this passage teaches us that, since no man can stand by his own works, all such as are accounted righteous before God, are righteous in consequence of the pardon and remission of their sins. In no other manner can any man be righteous in the sight of God.