Augustine of Hippo

For if there be error in you, You will not worship a strange god. If you think not of a false god, you will not worship a manufactured god: for "there will not" be in you any strange god. "For I am." Why would you adore what is not? "For I am the Lord your God" [Psalm 81:10]. Because "I am I that Am," and indeed "I Am" He says, I that Am, over every creature: yet to you what good have I afforded in time? "Who brought you out of the land of Egypt." Not to that people alone is it said. …

Exposition on Psalm 81 ↗

Jerome

For I am the Lord your God, who brought you out of the land of Egypt. It is we who have been brought out of the land of Egypt — if indeed we have gone out, if we are in the wilderness, if we long to see the land of promise. If we have left Sodom, let us not look back to Sodom: we have been saved on the mountain. Let us not desire the flesh-pots of Egypt, let us not say: How well off we were in Egypt, when we ate flesh in the cauldrons, and the rest, and the cucumbers. Do you wish to receive the Lord's foods? …

Homily 13, on Psalm 80 ↗

Gregory the Dialogist

And indeed I do not see that I am sufficient for this work; but nevertheless the strength that inexperience denies, charity supplies. For I know Him who said: "Open your mouth, and I will fill it." Therefore let the good work be in our will, for from divine assistance it will be in its completion.

Forty Gospel Homilies, Homily 21 ↗