The whole of trinitarianism is epitomized in the phrase of Peter Lombard, who, having made the impossible arithmetical assertion that no one person of the trinity is less than the other two, says: "He that can receive this, let him receive it; but he that cannot, let him, however, believe it; and let him pray that what he believes he may understand."
Jesus having been ordained one of the godhead, the only begotten son of the most high god, the worship of his mother naturally followed; for who could reasonably refuse to bend the knee to the one virgin of all humanity, considered worthy of the honor of bearing the incarnate deity? It was all the easier for the Christian church to adopt this practice, that it had been one of the principal features of the ancient theologies. All nations have worshiped a pure, chaste queen of heaven, a personification of that beautiful celestial body that smiles so benignly down on earth every month. In every land the moon was worshiped as a mother goddess, pure, beautiful, and loving; for there is not the slightest doubt that the virgin queen of heaven, so commonly worshiped by all nations, was merely a personification of the moon.
Isis, mother of the Egyptian savior Horus, was worshiped as a virgin and was styled "Our Lady," "Queen of Heaven," "Mother of God," "Intercessor," and "Immaculate Virgin." She was commonly represented with the divine infant seated on her lap, or standing on a crescent moon, and having a glory of twelve stars about her head.
With the adoption of the worship of Isis to Christianity, the crescent moon became a sacred symbol of Mary, who was often portrayed standing upon one. It was held peculiarly sacred by the Greek church and a large crescent moon of gold adorned the dome of St. Sophia at Constantinople. When the city fell in 1453 before the Turkish arms, the Sultan adopted the crescent as a symbol of his victorious power and as a humiliation to his Christian enemies, and thus again the religious significance of the crescent changed, and as an emblem of a Mohammedan power soon came to be regarded by the forgetful Christians with horror and a deadly hatred.
The ancient Chaldees believed in a celestial virgin-mother to whom the erring sinner might appeal, and Shin-moo, the mother goddess, occupies a conspicuous place in Chinese worship. The Babylonians and Assyrians worshiped a goddess called Mylitta, whose son Tammuz is said to have arisen from the dead.