Thomas Aquinas, on Ps 52:6

“They have not called upon God: there have they trembled for fear, where there was no fear. For God hath scattered the bones of them that please men: they have been confounded, because God hath despised them.”

“"Who shall give from Zion?" Here he treats of the good. And first the question is proposed. Second, the answer. The question is this: Who, going forth from Zion, shall save Israel? Who? Christ, because "salvation is from the Jews": therefore from Zion, that is, from the Jews, and from David, and from the upper room of Zion where the apostles received the Holy Spirit, the preachers of salvation went forth. And this none shall give but God. And in what way? "When he shall have turned back the captivity of his people." For the faithful people was held in captivity, that is, in the prison of the Devil, which God turned back when he released them. Ps.: "Turn back, O Lord, our captivity," etc. And what shall follow from this? Joy and gladness. Ps.: "When the Lord turned back the captivity of Zion, we became," etc. But there is a twofold state of the faithful, namely of struggle and of the crown, of merit and of reward; and in both there is joy. And the first is joy from the participation of grace. Rom. 14: "The kingdom is justice." And therefore he says, "Jacob shall exult." 1 Sam. 2: "My heart has exulted," etc. In the reward there is joy, says the Gloss. Is. 35: "Everlasting gladness," etc. And therefore he says, "Israel shall be glad."”

Imported from an open dataset — not yet checked against the printed edition.