Charles H. Spurgeon on Psalms 143:2

And enter not into judgment with thy servant. He had entreated for audience at the mercy seat, but he has no wish to appear before the judgment seat. Though clear before men, he could not claim innocence before God. Even though he knew himself to be the Lord's servant, yet he did not claim perfection, or plead merit; for even as a servant he was unprofitable. If such be the humble cry of a servant, what ought to be the pleading of a sinner? For in thy sight shall no man living be justified. None can stand before God upon the footing of the law. God's sight is piercing and discriminating; the slightest flaw is seen and judged; and therefore pretence and profession cannot avail where that glance reads all the secrets of the soul. In this verse David told out the doctrine of universal condemnation by the law long before Paul had taken his pen to write the same truth. To this day it stands true even to the same extent as in David's day: no man living even at this moment may dare to present himself for trial before the throne of the Great King on the footing of the law. This foolish age has produced specimens of n pride so rank that men have dared to claim perfection in the flesh; but these vain glorious boasters are no exception to the rule here laid down: they are but men, and poor specimens of men. When their lives are examined they are frequently found to be more faulty than the humble penitents before whom they vaunt their superiority.