Psalm 143:2

And enter not into judgment with thy servant
The house of judgment, as the Targum, or court of judicature; God is a Judge, and there is and will be a judgment, universal, righteous, and eternal; and there is a day fixed for it, and a judgment seat before which all must stand, and a law according to which all must be judged; but the psalmist knew he was but a man, and could not contend with God; and a sinful creature, and could not answer him for one of a thousand faults committed by him; and though his servant, yet an unprofitable one; his nature, his heart, his thoughts, words, and actions, would not bear examining, nor stand the test of the holy law of God; nor was he able to answer the demands of divine justice in his own person; and therefore pleads for pardon and acceptance through Christ and his righteousness, and entreats that God would not proceed against him in a judicial way, now nor hereafter; for in thy sight shall no man living be justified;
in a legal sense, so as to be acquitted in open court, and not condemned; that is, by the deeds of the law, as the apostle explains it, ( Romans 3:20 ) ; by obedience to it, by a man's own works of righteousness; because these are imperfect, are opposed to the grace of God, and would disannul the death of Christ, and encourage boasting; and much less in the sight of God; for, however men may be justified hereby in their own sight, and before men, in their esteem and account, yet not before God, the omniscient God; who sees not as man sees, and judges not according to the outward appearance, and is perfectly holy and strictly just; and none but the righteousness of Christ can make men righteous, or justify them before him; and this can and does, and presents men unblamable and irreprovable in his sight.