Jesus son of Mary. The people heard only his voice; they heard nothing besides it. When a jinni takes up residence in a human being and speaks through his tongue, the listeners can tell at once that the voice is not a human voice and that the words being uttered are not human speech.
The Messiah, peace be upon him, was never heard to say anything except what one would normally hear from other messengers. Had the speaker operating through the human nature been a jinni or an angel, that fact would have become evident, and everyone would have known that it was not a man who was speaking. How much more would this be the case were the speaker the Lord of all worlds! If such a thing were true, it would have manifested itself far more conspicuously than the speech of an angel or a jinni delivered through a human tongue—by many, many degrees.
As for the miracles they witnessed at the hands of the Messiah, blessings and peace be upon him, they had seen from others miracles that were similar—or even greater. Others besides him have revived the dead and disclosed knowledge of the unseen more often than he did; indeed, the miracles of Moses are greater, or at least more numerous, than his. The appearance of miracles at Jesus’ hands therefore proves his prophethood and his mission, just as miracles proved the prophethood and mission of other messengers; it does not prove divinity.
When the Antichrist (al-Dajjāl) claims godhood, the extraordinary feats that will occur at his hands will not serve as proof for that claim, because a claim to divinity is inherently impossible. Thus, no display of wonders can ever establish the truth of an impossible proposition.