Section: The words of the prophet Isaiah—“Behold, the virgin shall conceive and give birth to a son, and his name shall be called Immanuel.”

They argue: “Isaiah the prophet said, ‘Behold, the virgin shall conceive and give birth to a son, and his name shall be called Immanuel.’”

Immanuel is a Hebrew word that, in Arabic, means “Our God is with us.” From this they infer that the prophet testified that Mary bore the divinity united with the humanity, both together.

We reply: These words contain nothing to show that Mary bore a divinity united with a human nature, nor that she gave birth to the Creator of the heavens and the earth. Rather, the wording demonstrates that the one born is not the Creator of the heavens and the earth, for it says, “She shall give birth to a son.” The term “a son” here is indefinite in an affirmative statement, just as one would say of any other woman, “So-and-so gave birth to a son.” This is clear evidence that he is a son like other sons, not the Creator of the heavens