This is the half doubting, through sense of casting off, but returning confidence of the Spirit of truth, in the house of Jacob, though the sense that their enemies are not overcome, but that the promises go to results which include that; in a word, it is the sense of the Spirit in the house of Jacob, when their enemies' pressure brings them into the full sense of their casting off, which indeed was (though the reconciling of the world spiritually, yet) the abrogation of judgment in the earth, and the leaving of it by God, but at the same time led them to that looking to God which at once brought them, under grace, to all the promises, and to the " Through God we shall do valiantly."
We have here, in verse 5, the appropriation of the Davidical name to the Remnant, and the identification with him in name. The question arises here, Edom, as a place, seems to be redeemed as by the go-el (redeemer) though, as the strong people and city, it is utterly ruined, and there is no return; see Ruth, Jeremiah, etc.
It appears from this Psalm that Israel is fully recognized with Judah, and Judah in his last character before God begins to act with them, on the enemies around, within the territory, and the Jews possess themselves of Edom. After their recovery from positive oppression and trials, they call upon God for help, in their weakness, for action—verse 4 shows the latter, as verse 3 the former.
10. This verse invites the God who had cast them off as the God of their help. He had not let them stumble for their fall. They now stay no more upon those that smote them, but upon the Lord, the Holy One in truth.
God and man are again contrasted, but in honest faith and sincerity, humble yet sincere truth after being put out of the positive trouble, under the sense of it, looking for the strength which shall order and establish them as against their enemies, going with their armies—acknowledging it was the casting-off of God—accepting the punishment of their iniquity—owning they were cast off—still as with a trembling heart as to themselves, yet true, holding the banner of God given to them and calling themselves "His beloved." The truth is to come out in connection with them—God is to tread down their enemies—an old position on much better ground to a humbled, renewed people, in whose heart God has put His laws, and revealed their Messiah as Jehovah in righteousness, whom they once rejected; but here it is specially God and the people, and the work in them, not the revelation to them. Here He stands at their head receiving God in their return. The Spirit of Christ having spoken all through, Psa. 55-60 are consequent, it seems to me, in the sense we have seen all through.