The Feast of St. Ambrose was on the 7th. Below is an excerpt from his "Exposition of the Christian Faith" (De fide ad Gratianum Augustum, Bk. 1, Ch. 20):
"Moreover, there is a Cup, which You use to purify the hidden chambers of the soul, a Cup not of the old order, nor filled from a common Vine,— a new Cup, brought down from heaven to earth, filled with wine pressed from the wondrous cluster, which hung in fleshly form upon the tree of the Cross, even as the grape hangs upon the Vine. From this Cluster, then, is the Wine that makes glad the heart of man, Judges 9:13 uplifts the sorrowful, is fragrant with, pours into us, the ecstasy of faith, true devotion, and purity." (New Advent)
Yesterday was the Feast of the Immaculate Conception of the Blessed Virgin Mary. Ambrose stressed the virginity of Mary and her role as the Mother of God. His emphasis on Mary influenced Popes Damasus [commemorated Dec. 11], Siricius and Leo the Great. Ambrose writes, "The virgin birth is worthy of God. Which human birth would have been more worthy of God, than the one, in which the Immaculate Son of God maintained the purity of his immaculate origin while becoming human?" (see n. 14)
Luther wrote, "It is a sweet and pious belief that the infusion of Mary's soul was effected without original sin; so that in the very infusion of her soul she was also purified from original sin and adorned with God's gifts, receiving a pure soul infused by God; thus from the first moment she began to live she was free from all sin."