You turned back the captivity of Jacob;
You forgave the transgressions of Your people;
You covered all their sins. (Pause)
You ended all Your wrath;
You turned from the wrath of Your anger.
Turn us, O God of our salvation,
And turn away Your anger from us.
Will You be angry with us forever,
Or will You prolong Your anger from generation to generation?
O God, You will turn and give us life,
And Your people will be glad in You.
Show us Your mercy, O Lord,
And grant us Your salvation.
Earlier he stated: Thou hast covered all their sins; but now he asks afresh: Turn off thy anger from us. But both are appropriate if we consider the occasions of sins. With regard to the wicked deeds which the Jewish people had previously committed, he earlier gave thanks because all were shown to have been mitigated by the coming of the Lord; but here again he makes entreaty because of the sins to come, for he foresaw that they would again commit cruel crimes at the passion of the Lord. In short, he says: Convert us, so that instead of persecutors they may become defenders; instead of blasphemers, preachers; instead of disputants, disciples. His expression, Us embodies the people of whom he speaks. We must similarly interpret Turn off thy anger from us, as an entreaty that the punishment which is owed should not smite the Jewish people.
He knew that the Lord’s patience bears with men’s sins, and so he asks that He should not smite them with eternal damnation, but should soften them with enticements, bring improvement to them by supporting them, and correct them by admonition—all of which he knew that He would do.… With wonderful piety he begs the Lord, attesting that we do not win our conversion by merits, but that it emerges through His gift when our spirit manifests a salutary desire for something on its own behalf. He says: Thou wilt convert us, O God, and bring us to life; in other words: “You set before us a longing for conversion, so that we can attain entry to life”. When You bestow this, then Your people will successfully rejoice in You after unhappily rejoicing in themselves. This is what happens to the converted once they begin to obtain the blessing of the Savior.
He was well aware that the Lord would come, but he asks to behold these blessings not just with his physical eyes in company with the rest who are non-believers, but also with the most pure gaze of the heart. The mercy of the Father is the Lord Savior; that blessed troop asked that He be made manifest to them in the bright light of the true faith, not merely covered with the veil of the flesh but also conspicuous in the clear light of His power. He added the identical phrase, grant us, when He spoke of Christ; what He meant was: “Grant Your salvation so that we may embrace and possess and enjoy Him with the gift of eternal glory.” To the unfaithful He merely appeared, but was not also granted; the psalmist says: Grant, then, so that when He is received in our hearts through heaven’s gift, He can be removed by no trials.
Cassiodorus, Explanation of the Psalms 84.5–8