O Jehovah! God of vengeances We know that the Jews were surrounded by many neighbors who were not well affected towards them, and were thus incessantly subject to the assaults and oppression of bitter enemies. As this intestine persecution was even more afflictive than the rampant and unrestrained violence of the wicked, we need not wonder that the Psalmist should earnestly beseech God for deliverance from it. The expressions which he uses, calling upon God to shine forth conspicuously, and lift himself up on high, amount in common language to this, that God would give some actual manifestation of his character as judge or avenger; for in that case he is seen ascending his tribunal to exact the punishment due to sin, and demonstrate his power in preserving order and government in the world. The phraseology is used only in reference to ourselves, disposed as we are to feel as if he overlooked us, unless he stretched out his hand to help us in some visible and open manner. In calling him twice successively the God of vengeances, and then, judge of the earth, the Psalmist uses these titles as applicable to the present situation in which he stood, reminding Him in a manner of the office which belonged to him, and saying -- O Lord! it is thine to take vengeance upon sinners, and judge the earth -- see how they take advantage of the impunity which is extended to their guilt, and triumph audaciously in their wickedness! Not that God needs to be admonished of his duty, for he never resigns himself to indifference, and even when he seems to delay his judgments, is only adjusting them according to what he knows to be the best season; but his people conceive of him in this way to themselves, and take occasion from this to embolden and stimulate themselves to greater vehemency in prayer. The same may be said of the repetition which the Psalmist uses. When the wicked then indulge in unrestrained excesses, we are to remember that God can never cease to assert his character as the judge of the earth who takes vengeance upon iniquity. Does he seem in our carnal apprehension to have at any time withdrawn and hidden himself? let us put up without hesitation the prayer which is here taught us by the Holy Spirit, that he would shine forth

O Lord God, to whom vengeance belongeth - Margin, God of revenges The idea is, that it pertains to God to take vengeance, or to punish for crimes. See the notes at Romans 12:19. The appeal here is made to God in view of the crimes committed by others, and which are referred to in the subsequent part of the psalm. God is addressed as having the right to restrain and punish wicked people, and he is asked to interpose and assert that right in a case which clearly demanded it. The appeal is repeated to make it emphatic, or to denote "earnestness" in the petition.
Show thyself - Margin, as in Hebrew, "shine forth." The meaning is, Manifest thyself; come forth as such a God; prove thy right; display thy power, and show that thou art a God opposed to crime and wrong. The same Hebrew word is used here which is found in Psalm 80:1, and which is there rendered "shine forth." See the notes at that passage.

O Lord God, to whom vengeance belongeth - God is the author of retributive justice, as well as of mercy. This retributive justice is what we often term vengeance, but perhaps improperly; for vengeance with us signifies an excitement of angry passions, in order to gratify a vindictive spirit, which supposes itself to have received some real injury; whereas what is here referred to is that simple act of justice which gives to all their due.

O LORD God, to whom (a) vengeance belongeth; O God, to whom vengeance belongeth, (b) shew thyself.
(a) Whose office it is to take vengeance on the wicked.
(b) Show by effect that you are judge of the world to punish the wicked.

O Lord God, to whom vengeance belongeth,.... As it does to God, and to him only; not to Heathen deities, one of which has the name of Vengeance given it, Acts 28:4, nor to Satan, the enemy and avenger, and his spiteful principalities and powers; nor to men, who are not to exercise private revenge on their fellow creatures; only to civil magistrates, to whom public revenge belongs, they being God's viceregents, and representing him; otherwise to God only it belongs, against whom sin is committed; and he will, in his own time and way, execute it; he is "the God of revenges" (e), as the words may be rendered; and this is applicable to Christ, who is the true Jehovah, and God over all: it was he that took vengeance on Sodom and Gomorrah, and rained from the Lord fire and brimstone on them; and who took vengeance on the inventions of the Israelites in the wilderness; and when he came in the flesh, he came with vengeance to destroy Satan and his works, as it was promised and prophesied he should, Isaiah 35:4, forty years after his death, resurrection, and ascension, he came in his power and kingdom, and took vengeance on the Jewish nation, for their unbelief and rejection of him, Luke 21:22, and at the opening of the sixth seal his wrath came upon Rome Pagan in a manner intolerable to them, for their cruel persecutions of his church and people; and the cry of the souls under the altar was much like what is uttered in this psalm; see Revelation 6:9, and at the time of his spiritual coming and reign he will avenge the blood of his saints on Rome Papal, or antichrist, whom he will destroy with the breath of his mouth, and the saints will be called upon to rejoice, and will rejoice, when they see the vengeance, Revelation 18:20 and his personal coming will be in flaming fire, to take vengeance on them that know not God, and obey not his Gospel, and when all the wicked will suffer the vengeance of eternal fire, 2-Thessalonians 1:8.
O God, to whom vengeance belongeth; which is repeated to observe the certainty of it, and to express the vehement and importunate desire of the psalmist, and those he represents, that he would show himself to be so, follows:
show thyself; or "shine forth" (f), as in Psalm 80:1 either at his incarnation, when he appeared as the dayspring from on high; yea, as the sun of righteousness; or, in the ministry of the Gospel, the great light which shone first on the inhabitants of Judea and Galilee, and then on the Gentile world; or in his gracious presence with his people, which is expressed by causing his face to shine upon them, Psalm 80:7, or in the protection of them, and destruction of their enemies; which is a showing himself strong on their behalf, an appearing to the joy of the one, and the confusion of the other; and in this manner will Christ show himself in the latter day.
(e) "Deus ultionum", V. L. Pagninus, Montanus, Junius & Tremellius, Piscator, &c. (f) "irradia", Montanus; "illucesce", Junius & Tremellius, Piscator; "effulsit", Cocceius; "adfulge", Michaelis.

We may with boldness appeal to God; for he is the almighty Judge by whom every man is judged. Let this encourage those who suffer wrong, to bear it with silence, committing themselves to Him who judges righteously. These prayers are prophecies, which speak terror to the sons of violence. There will come a day of reckoning for all the hard speeches which ungodly sinners have spoken against God, his truths, and ways, and people. It would hardly be believed, if we did not witness it, that millions of rational creatures should live, move, speak, hear, understand, and do what they purpose, yet act as if they believed that God would not punish the abuse of his gifts. As all knowledge is from God, no doubt he knows all the thoughts of the children of men, and knows that the imaginations of the thoughts of men's hearts are only evil, and that continually. Even in good thoughts there is a want of being fixed, which may be called vanity. It concerns us to keep a strict watch over our thoughts, because God takes particular notice of them. Thoughts are words to God.

The writer, appealing to God in view of the oppression of enemies, rebukes them for their wickedness and folly, and encourages himself, in the confidence that God will punish evildoers, and favor His people. (Psalm. 94:1-23)
God's revenge is His judicial infliction of righteous punishment.
show thyself--(Compare Margin).

The first strophe prays that God would at length put a judicial restraint upon the arrogance of ungodliness. Instead of חופיע (a less frequent form of the imperative for הופע, Ges. ֗53, rem. 3) it was perhaps originally written הופיעה (Psalm 80:2), the He of which has been lost owing to the He that follows. The plural נקמות signifies not merely single instances of taking vengeance (Ezekiel 25:17, cf. supra Psalm 18:48), but also intensively complete revenge or recompense (Judges 11:36; 2-Samuel 4:8). The designation of God is similar to אל גּמלות in Jeremiah 51:56, and the anadiplosis is like Psalm 94:3, Psalm 94:23, Psalm 93:1, Psalm 93:3. הנּשׂא, lift Thyself up, arise, viz., in judicial majesty, calls to mind Psalm 7:7. השׁיב גּמוּל is construed with על (cf. ל, Psalm 28:4; 59:18) as in Joel 3:4. With גּאים accidentally accord ἀγαυός and κύδεΐ γαίων in the epic poets.