EXEGESIS - GENESIS.
And S. Ambrose: --
"Receive me in that flesh which is fallen in Adam. Receive me not from Sara but from Mary; inasmuch as she is a Virgin incorrupt, a Virgin by grace free from all stain of sin. Suscipe me in carne quae in Adam lapsa est,* Suscipe me non ex Sara sed ex Maria; ut incorrupta sit Virgo, sed Virgo per gratiam ab omni integra labe peccati."+
"God give thee the dew of heaven, and of the fatness of the earth," etc. -- xxvii.28.
"She it is whom Isaac foresaw, when he said to Jacob: The Lord give thee the blessing of heaven from above, and the blessing of the earth containing all things. For He who came down from heaven, God Only-begotten, the Word, was carried in the womb, and born from the virginal paradise that has all things."++
"Juda is a lion's whelp: to the prey, my son, thou art gone up." -- xlix. 9.
Many of the Fathers here read: "Ex germine, fili mi, ascendisti." And in applying the passage to our Lord, they interpret the germen of the Blessed Virgin, and compare it with the virga, Is. xi. 1. Thus St. Hippolytus,** and S. Ambrose who says: --
"Marvellously did Jacob set forth His Incarnation by saying: From a shoot, my Son, thou art gone up: for that, as though the brother of earth, He germinated in the womb of the Virgin, and as a flower of good odour for the redemption of the whole world, issuing from His Mother's bowels with splendour of new light, He rose up, as saith Isaias: There shall go forth a rod from the root of Jesse and a flower shall rise up out of his root. The root is the family of the Jews; the rod, Mary; Mary's flower, Christ. Rightly a rod, since she is of royal race, of the house and fatherland of David, and her flower, Christ, who did away with the stench of all the world's filth, and infused the sweet fragrance of eternal life."||
"It is fitting, yea at all times, to proclaim as blessed, hold in admiration and extol with praises the ever-blooming rod of Jesse, that brought life forth fruit to the entire race of men."***
* The Paris edition has Non in carne, quae in Adam lapsa est": but all other editions and all the MSS. reject the negation, and with good reason; since here is signified nought else than that the flesh of Christ was of the same nature as that of Adam from which it was derived by generation, although no way stained with his sin.