“MARY bears the price of our redemption. The water which gushed out of the rock to refresh the people of Israel is her symbol (Num. 20:8). Hers is the integrity of maidenhood, the fruitfulness of wedlock, the purity of chastity. Let us bless her often, and sing her praises: “for behold, from henceforth all generations shall call me blessed” (Lk. 1:48).”
~St. Thomas Aquinas: Sermon for the Fourth Sunday of Lent, 47.