From the presence of thy countenance. Literally it is, from before thy face, or, before thy face. By these words David intimates that if God does not rise up as the vindicator of his cause, he will be overwhelmed with calumnies though innocent, and will be looked upon as a guilty and condemned person. The cognisance which God will take of his cause is tacitly set in opposition to the dark inventions of falsehood which were spread against him. His language is as if he had said, I do not ask for any other judge but God, nor do I shrink from standing before his judgment-seat, since I bring with me both a pure heart and a good cause. What he immediately adds with respect to God's looking upon his uprightness is of similar import. He does not mean to say that God is blind, but only beseeches him actually to show that he does not connive at the wickedness of men, and that it is not to him a matter of indifference when he beholds those who have not the means of defending themselves receiving evil treatment undeservedly. Some take the word judgment in too restricted a sense for the right to the kingdom which was promised to David, as if he petitioned to be placed on the royal throne by the power of God, inasmuch as he had been chosen by him to be king, and had also, in his name and by his authority, been anointed to this office by the hand of Samuel. The meaning which I attach to David's language is simply this, that being oppressed with many and varied wrongs, he commits himself to the protection and defense of God.

Let my sentence - Hebrew, "my judgment." The allusion is to a judgment or sentence as coming from God in regard to the matter referred to in the psalm, to wit, the injuries which he had received from his enemies. He felt that they had done him injustice and wrong; he felt assured that a sentence or judgment from God in the case would be in his favor. So Job often felt that if he could bring his case directly before God, God would decide in his favor. Compare Job 23:1-6.
Come forth from thy presence - From before thee. That is, he asks God to pronounce a sentence in his case.
Let thine eyes behold - He asked God to examine the case with his own eyes, or attentively to consider it, and to see where justice was.
The things that are equal - The things that are just and right. He felt assured that his own cause was right, and he prays here that justice in the case may be done. He felt that, if that were done, he would be delivered from his enemies. As between ourselves and our fellow-men, it is right to pray to God that he would see that exact justice should be done, for we may be able to feel certain that justice is on our side, and that we are injured by them; but as between ourselves and God, we can never offer that prayer, for if justice were done to us we could not but be condemned. Before him our plea must be for mercy, not justice.

My sentence come forth from thy presence - Thou knowest my heart, and my ways; judge me as thou shalt find; let me not fall under the judgment of man.
Let thine eyes behold the things that are equal - Thou knowest whether I render to all their due, and whether others act justly by me. Thou canst not be deceived: do justice between me and my adversaries.

Let my (b) sentence come forth from thy presence; let thine eyes behold the things that are equal.
(b) The vengeance that you will show against my enemies.

Let my sentence come forth from thy presence,.... Not of condemnation, such as came forth from God and passed on Adam and all his posterity, Romans 5:12; though such an one was executed on Christ, as he was the surety and representative of his people; but of justification, which came forth from God and passed on Christ, when he rose from the dead, and upon his people in him, 1-Timothy 3:16. Here it chiefly designs the vindication of the innocence of the psalmist before men; and his request is, that as he was fully persuaded that he was clear of the things he was charged with in the sight of God, that he would openly and publicly make him appear so before men; that he would bring forth his righteousness as the light, and his judgment as the noonday, Psalm 37:6; and of which he made no doubt but he would; so Christ, though he was traduced by men, knew he should be justified by his Father, and by his children, Isaiah 50:8;
let thine eyes behold the things that are equal; which is not to be understood barely of the eyes of his omniscience; for these behold things both equal and unequal, good and evil, things which agree and disagree with the law of God, the rule of righteousness and equity; but of his approbation of them, and that he would some way or other testify that approbation; for the petition intends the favouring of his just and equal cause, and making it to appear to be so.

This Psalm is termed a prayer because the language of petition is predominant. With a just cause, sincerely presented, the writer prays for a just decision and help and protection. Pleading former mercies as a ground of hope, he urges his prayer in view of the malice, pride, rapacity, and selfishness of his foes, whose character is contrasted with his pious devotion and delight in God's favor. (Psalm 17:1-15)
sentence--acquitting judgment.
from thy presence--Thy tribunal.
things that are equal--just and right, do Thou regard.

Sentence - Judgment on my behalf. Come - From thy tribunal.