It is clear that the Psalms address themselves naturally to a people in relationship with God, to a people under the law, though they may be driven out; only keepers of it are distinguished. They present the godly Remnant, and the heathen raging against Jehovah and His anointed. But there is no morning Star in Psa. 2, naturally. Note how very clear the character and resulting position of the Remnant, and Jesus rejected, exalted as Adonai (Lord) and finally reigning, is in Psa. 1 and 2. The Christian place left out, but what a place it does give us! Compare Psalm 110 as to Adonai's place, and then Isa. 6.
Thus the Psalms not only suppose a godly Remnant, distinct from the mass of the nation, but suppose the deliberate hostility of the ungodly, Satan-led party against Messiah, and the godly who follow Him, so as not only to give the latter-day state, but also that of the time of Christ, and hence so much, besides direct prophecy, applies to Him as to the moral state—not as to Him personally perhaps, but as to that in which He was, and the Spirit which animated Him in it, for indeed His Spirit had provided for them, and He came and put Himself in their place. This arranged opposition is important to remark in the Psalms.