The first, often referred to as the assumptus homo or “assumed man” theory, says that the Word assumed an independently existing human being in such a way that one divine-human person resulted. The second, often referred to as the “subsistence theory,” says that the Word assumed a human nature in such a way that one divine-human person resulted. The third, often referred to as the habitus theory, thinks of the assumed human nature as similar to an acquired garment (think of a religious “habit”); according to this last approach, the body and soul of Christ are not united to each other (this
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