2 The next question is, whether we should understand the Father, or the Son, or the Holy Spirit, or the Trinity, “to have stood among the congregation of gods, and in the midst to distinguish the gods;” because Each One is God, and the Trinity itself is One God. It is not indeed easy to make this clear, because it cannot be denied that not a bodily but a spiritual presence of God, agreeable to His nature, exists with created things in a wonderful manner, and one which but a few do understand, and that imperfectly: as to God it is said, “If I shall ascend into heaven, You are there; if I shall go down into hell, You are there also.” Hence it is rightly said, that God stands in the congregation of men invisibly, as He fills heaven and earth, which He asserts of Himself by the Prophet's mouth; and He is not only said, but is, in a way, known to stand in those things which He has created, as far as the human mind can conceive, if man also stands and hears Him, and rejoices greatly on account of His voice within. But I think that the Psalm intimates something that took place at a particular time, by God's standing in the congregation of gods. For that standing by which He fills heaven and earth, neither belongs peculiarly to the synagogue, nor varies from time to time. “God,” therefore, “stood in the congregation of gods;” that is, He who said of Himself, “I am not sent but to the lost sheep of the house of Israel.” The cause too is mentioned; “but in the midst, to judge of the gods.”...
3. “How long will you judge unrighteously, and accept the persons of the ungodly”; as in another place, “How long are you heavy in heart?” Until He shall come who is the light of the heart? I have given a law, you have resisted stubbornly: I sent Prophets, you treated them unjustly, or slew them, or connived at those who did so. But if they are not worthy to be even spoken to, who slew the servants of God that were sent to them, you who were silent when these things were doing, that is, you who would imitate as if they were innocent those who then were silent, “how long will you judge unrighteously, and accept the persons of the ungodly?” If the Heir comes even now, is He to be slain? Was He not willing for your sake to become as it were a child under guardians? Did not He for your sake hunger and thirst like one in need? Did He not cry to you, “Learn of Me, for I am meek and lowly of heart”? Did He not “become poor, when He was rich, that by His poverty we might be made rich”? “Give sentence,” therefore, “for the fatherless and the poor man, justify the humble and needy”. Not them who for their own sake are rich and proud, but Him who for your sake was humble and poor, believe ye to be righteous: proclaim Him righteous. But they will envy Him, and will not at all spare Him, saying, “This is the Heir, come, let us kill Him, and the inheritance shall be ours.” “Deliver,” then, “the poor man, and save the needy from the hands of the ungodly”. This is said that it might be known, that in that nation where Christ was born and put to death, those persons were not guiltless of so great a crime, who being so numerous, that, as the Gospel says, the Jews feared them, and therefore dared not lay hands on Christ, afterwards consented, and permitted Him to be slain by the malicious and envious Jewish rulers: yet if they had so willed, they would still have been feared, so that the hands of the wicked would never have prevailed against Him. For of these it is said elsewhere, “Dumb dogs, they know not how to bark.” Of them too is that said, “Lo, how the righteous perishes, and no man lays it to heart.” He perished as far as lay in them who would have Him to perish; for how could He perish by dying, who in that way rather was seeking again what had perished? If then they are justly blamed and deservedly rebuked, who by their dissembling suffered such a wicked deed to be committed; how must they be blamed, or rather not only blamed, but how severely must they be condemned, who did this of design and malice?
Source: The Enarrations, or Expositions, on the Psalms (New Advent)