is precisely the reality (1) of the Messiah’s words: “I come to you with parables, but he will come to you with the interpretation and will explain everything to you.”

If you also reflect on his statement, “Whatever Allah has prepared for you, he will inform you of it,” together with the detailed descriptions he conveyed of Paradise and Hell and of reward and punishment, you will be certain of the truthfulness of the two noble messengers and of how the detailed reports (2) brought by Muhammad correspond exactly to the concise announcement made by his brother, the Messiah.

Consider as well his words about the Paraclete: “He will bear witness to me just as I have borne witness to him” (3). Notice how unmistakably they apply to Muhammad son of ʿAbdullah, how they affirm the veracity of both messengers, and how explicitly they speak of a man who will come after the Messiah to testify that the Messiah is Allah’s servant and messenger, just as the Messiah testified to him.

Indeed, the Messiah proclaimed the prophethood of Muhammad—may Allah’s blessings and peace be upon them both—with a call unmatched by any prophet before him. He magnified his Lord with the takbīr, declaring that He has neither consort nor child; then he raised his voice with the testimony that there is no god but Allah alone, without partner—one, unique, the Self-Sufficient, who neither begets nor is begotten and to whom none is comparable. After that he proclaimed the testimony that Muhammad is His servant and messenger, the one who will testify to the Messiah’s prophethood, aided by the Spirit of Truth, who does not speak from his own desire but only conveys what is revealed to him, teaching them everything and informing them of what Allah has prepared for them.

He then lifted his voice with the cry of hayya ʿala al-falāḥ (Come to success), urging them to follow him, to believe in him, and to affirm him, and that—