Poetically, by containing the Creator of the Universe in her womb, Mary has become Platytera ton ouranon, which means: "More spacious than the heavens." This type is sometimes called the "Virgin of the Sign" or "Our Lady of the Sign," a reference to Isaiah 7:14: "Therefore the Lord himself shall give you a sign; Behold, a virgin shall conceive, and bear a son, and shall call his name Emmanuel." Such an image is often placed in the apse above the altar.