Ambrose of Milan, on Song 4:12

“My sister, my spouse, is a garden enclosed, a garden enclosed, a fountain sealed up.”

“"A garden enclosed," says He, "is My sister, My spouse, a garden enclosed, a sealed fountain." Christ says this to the Church, which he desires to be a virgin, without spot, without a wrinkle. A fertile garden is virginity, which can bear many fruits of good odour. A garden enclosed, because it is everywhere shut in by the wall of chastity. A sealed fountain, because virginity is the source and origin of modesty, having to keep inviolate the seal of purity, in which source the image of God is reflected, since the purity of simplicity agrees also with chastity of the body.”

Imported from an open dataset — not yet checked against the printed edition.