Thy wife shall be as a fruitful vine by the sides of thine house: thy {c} children like olive plants round about thy table.

(c) Because God's favour appears in no outward thing more than in the increase of children, he promises to enrich the faithful with this gift.Psalm 128:3 Parallel Commentaries

Epistle Xlvi. To Isacius, Bishop of Jerusalem .
To Isacius, Bishop of Jerusalem [159] . Gregory to Isacius, &c. In keeping with the truth of history, what means the fact that at the time of the flood the human race outside the ark dies, but within the ark is preserved unto life, but what we see plainly now, namely that all the unfaithful perish under the wave of their sin, while the unity of holy Church, like the compactness of the ark, keeps her faithful ones in faith and in charity? And this ark in truth is compacted of incorruptible timber, …
Saint Gregory the Great—the Epistles of Saint Gregory the Great

Letter xxxiv. To Marcella.
In reply to a request from Marcella for information concerning two phrases in Ps. cxxvii. ("bread of sorrow," v. 2, and "children of the shaken off," A.V. "of the youth," v. 4). Jerome, after lamenting that Origen's notes on the psalm are no longer extant, gives the following explanations: The Hebrew phrase "bread of sorrow" is rendered by the LXX. "bread of idols"; by Aquila, "bread of troubles"; by Symmachus, "bread of misery." Theodotion follows the LXX. So does Origen's Fifth Version. The Sixth …
St. Jerome—The Principal Works of St. Jerome