Help me, O Jehovah! The prophet repeats his prayer, because the more we are assailed by the subtilty and deceit of Satan, the more necessary is it for us to strive more ardently, and display the greater boldness. We may, indeed, have the full assurance of God being propitious towards us, yet when he delays to manifest it, and when the ungodly slander us, it must be that various doubts which keep intruding themselves upon us arise in our minds. Hence, it is not without reason that David, in order that he might withstand such attacks, places himself under the protection of that God who, according to his mercy and goodness, helps his people in their time of need. He implores that deliverance may be extended to him, not by ordinary means, but by the peculiar and special display of God's power, so that his enemies may stand abashed, and not dare to open their mouths; and we know that God sometimes secretly grants succor to his servants, while, at other times, he stretches out his hand in such a visible manner, that the ungodly, though they shut their eyes, are constrained to acknowledge that there is divine agency connected with their deliverance. For as his enemies had exalted themselves against God, so it was his desire, after they shall have been subdued, to exult over them in the name of God. In cherishing this desire, he has no wish to procure for himself the renown of being valiant in war, but that God's power may be displayed, that no flesh may glory in his sight. The words may also be viewed as referring both to his deliverance from his enemies, and to his affliction; his desire being to attribute his deliverance mainly to the grace of God; because, in opposing the hand of God to fortune and to all human means of deliverance, it is plainly his intention that God should be recognised as the alone author of it. This deserves to be carefully considered by us, for however anxious we are to be delivered by the hand of God, yet there is scarcely one among a hundred who makes the manifestation of God's glory his chief end; that glory for which we ought to have a greater regard than for our own safety, because it is far more excellent. Whosoever then is desirous that the ungodly may be constrained to acknowledge the power of God, ought the more carefully to take heed to the help of God which in his own case he experiences; for it would be most absurd to point out the hand of God to others, if our minds have not recognised it.

Help me, O Lord my God - Stand by me; interpose.

Help me, O LORD my God: O (o) save me according to thy mercy:
(o) The more grievously Satan assailed him, the more earnest and instant was he in prayer.

Help me, O Lord my God,.... Jehovah the Father is here addressed, who is the God of Christ, as Christ is man; who formed him, supported him, and glorified him; and whom Christ loved, believed in, obeyed and prayed unto; nor did he pray to a God that could not hear, but to one that was able to save him from death: as a divine Person he needed no help, being the mighty God, the most Mighty, the Almighty: but as man he did, being encompassed about with infirmities; and as Mediator help was promised him, he expected it, and he had it, Psalm 89:21.
O save me according to thy mercy; or "kindness"; as before in Psalm 109:21 from sufferings, and out of them; from death and the grave, as he was; or his people by him, who are saved not by works of righteousness, but according to the mercy of God, Titus 3:5.

Let my deliverance glorify Thee (compare Psalm 59:13).

The cry for help is renewed in the closing strophe, and the Psalm draws to a close very similarly to Ps 69 and Ps 22, with a joyful prospect of the end of the affliction. In Psalm 109:27 the hand of God stands in contrast to accident, the work of men, and his own efforts. All and each one will undeniably perceive, when God at length interposes, that it is His hand which here does that which was impossible in the eyes of men, and that it is His work which has been accomplished in this affliction and in the issue of it. He blesses him whom men curse: they arise without attaining their object, whereas His servant can rejoice in the end of his affliction. The futures in Psalm 109:29 are not now again imprecations, but an expression of believingly confident hope. In correct texts כּמעיל has Mem raphatum. The "many" are the "congregation" (vid., Psalm 22:23). In the case of the marvellous deliverance of this sufferer the congregation or church has the pledge of its own deliverance, and a bright mirror of the loving-kindness of its God. The sum of the praise and thanksgiving follows in Psalm 109:31, where כּי signifies quod, and is therefore allied to the ὅτι recitativum (cf. Psalm 22:25). The three Good Friday Psalm all sum up the comfort that springs from David's affliction for all suffering ones in just such a pithy sentence (Psalm 22:25; Psalm 69:34). Jahve comes forward at the right hand of the poor, contending for him (cf. Psalm 110:5), to save (him) from those who judge (Psalm 37:33), i.e., condemn, his soul. The contrast between this closing thought and Psalm 109:6. is unmistakeable. At the right hand of the tormentor stands Satan as an accuser, at the right hand of the tormented one stands God as his vindicator; he who delivered him over to human judges is condemned, and he who was delivered up is "taken away out of distress and from judgment" (Isaiah 53:8) by the Judge of the judges, in order that, as we now hear in the following Psalm, he may sit at the right hand of the heavenly King. Ἐδικαιώθη ἐν πνεύματι...ἀνελήμφθη ἐν δόξῃ! (1-Timothy 3:16).