Third,
For two distinct realities to become a single reality while each remains exactly as it was—without transformation or intermixture—is, in plain reason, impossible. What the intellect can concede under the notion of “union” is that both would have to change and mingle, like water with wine or milk; once they merge into one substance, both are necessarily altered and blended.

Fourth,
If such a union were to occur, the two would turn into a single entity, so that the god would be the messenger and the messenger the god—this would be that. But if the god is other than the messenger, then they are still two entities. Every illustration they advance in defense of their view—such as likening it to fire in iron or the soul in the body—actually reveals the unsoundness of their claim; for when iron is hammered or plunged into water, the fire is affected, and when the body hungers, is crucified, or suffers pain, that pain reaches the soul. By their logic, then, the Lord of the Worlds would have suffered hunger, thirst, beating, and crucifixion. This is worse than what the Jews said when they alleged that He is poor, miserly, or that fatigue overtook Him.