Let us now come to the words, "Your wife" [Psalm 128:3]: it is said unto Christ. His wife, therefore, is the Church: His Church, His wife, we ourselves are. "As a fruitful vineyard." But in whom is the vineyard fruitful? For we see many barren ones entering those walls; we see that many intemperate, usurious persons, slave dealers, enter these walls, and such as resort to fortune-tellers, go to enchanters and enchantresses when they have a headache. Is this the fruitfulness of the vine? Is this the fecundity of the wife? It is not. These are thorns, but the vineyard is not everywhere thorny. It has a certain fruitfulness, and is a fruitful vine; but in whom? "Upon the sides of your house." Not all are called the sides of the house. For I ask what are the sides. What shall I say? Are they walls, strong stones, as it were? If he were speaking of this bodily tenement, we should perhaps understand this by sides. We mean by the sides of the house, those who cling unto Christ....
Next: “Your sons will be as olive shoots around your table.” In regards to Wisdom, the wife, rightly are the children called “sons,” not “daughters.” By the male sex strength of mind is often indicated. Or it may be because whenever this sex is named, it embraces both male and female, as elsewhere he says, “Blessed is the man who fears the Lord.” Not only is a man blessed who fears the Lord, but also a woman is blessed who fears the Lord.
[AD 430] Augustine of Hippo on Psalms 128:3