Mary is exalted for the sake of Jesus. It was fitting that she, as being a creature, though the first of creatures, should have an office of ministration. She, as others, came into the world to do a work, she had a mission to fulfil; her grace and her glory are not for her own sake, but for her Maker's; and to her is committed the custody of the Incarnation; this is her appointed office,—"A Virgin shall conceive, and bear a Son, and they shall call His Name Emmanuel". As she was once on earth, and was personally the guardian of her Divine Child, as she carried Him in her womb, folded Him in her embrace, and suckled Him at her breast, so now, and to the latest hour of the Church, do her glories and the devotion paid her proclaim and define the right faith concerning Him as God and man. Every church which is dedicated to her, every altar which is raised under her invocation, every image which represents her, every litany in her praise, every Hail Mary for her continual memory, does but remind us that there was One who, though He was all-blessed from all eternity, yet for the sake of sinners, "did not shrink from the Virgin's womb". Thus she is the Turris Davidica, as the Church calls her, "the Tower of David"; the high and strong defence of the King of the true Israel; and hence the Church also addresses her in the Antiphon, as having "alone destroyed all heresies in the whole world".