Ambrose of Milan

And therefore, in that seemingly contemptible body, you have prevailed, he said, because of the blessings of breasts and womb, the blessings of your father and mother. He called them either breasts or two Testaments, of which one was announced and the other was shown. And breasts are good, because they have nourished us with spiritual milk, and the Son offered himself to God: or he speaks of Mary's breasts, which were truly blessed, by which the holy Virgin gave the people of the Lord the drink of milk. …

On the Blessings of the Patriarchs ↗