The point, then, is that when Allah—exalted be He—commanded Moses, peace be upon him, to go to Pharaoh, Moses said:
“My Lord, I have killed one of them and I fear they will kill me. And my brother Aaron is more eloquent of tongue than I, so send him with me as a helper to confirm my words; for I fear that they will deny me.” He said, “We shall strengthen your arm with your brother and bestow upon both of you authority; they shall not reach you. By Our signs, you and those who follow you will be the victors.” (al-Qasas 28:33–35)
The Most High informs us about His servant, His messenger, and the one to whom He spoke directly—Moses, peace be upon him—describing his reply to his Lord when he was ordered to confront his enemy, the very tyrant from whose land he had fled after killing the Egyptian. Thus he said, “My Lord, I have killed one of them, and I fear they will kill me; and my brother Aaron is more eloquent than I in speech, so send him with me as a supporter to confirm me, for I fear they will belie me.”
That is: appoint him to accompany me as an aide, a supporter, and a minister who will help me convey Your message to them, for he is more articulate and persuasive than I.
Allah, glorified be He, granted his request, saying, “We shall strengthen your arm with your brother and grant the two of you authority,” meaning a conclusive proof, “so they shall not reach you,” that is, they will be unable to harm you on account of the signs We give you—or, as some say, by the blessing of those signs—“and you two, and whoever follows you, will be the triumphant.”
In Sūrat Ṭā Hā He likewise says:
“Go to Pharaoh; he has indeed transgressed.” He replied, “My Lord, expand my breast for me; make my task easy for me; loosen the knot in my tongue so that they may understand my speech.” (20:24-28)
It is said that a lisp afflicted his tongue because, as a child, he placed a burning coal upon it. Pharaoh had wanted to test his intellect when the boy tugged at his beard. He resolved to kill him, but Āsiyah defended him, saying, “He is only a child; test him.” Pharaoh then set before him a date and a glowing coal. Moses reached for the date, but an angel turned his hand toward the coal; he took it and placed it on his tongue, and the lisp resulted. Moses therefore asked that part of it be removed—just enough for people to understand him—without requesting its complete removal.
Al-Ḥasan al-Baṣrī said, “Messengers ask only for what necessity requires.” Hence a trace of the impediment remained, and Pharaoh—may Allah disfigure him—tried to disparage the Prophet, saying, “and he can scarcely articulate” (al-Zukhruf 43:52), meaning he can hardly express what is in his heart.
Moses then said: “And appoint for me a minister from my family—Aaron, my brother; strengthen me through him; make him my partner in my mission, so that we may glorify You much and remember You much, for You have always been watchful over us.” He said, “Your request has been granted, O Moses.” (Ṭā Hā 20:29-36)
That is, We have answered everything you asked and granted you what you sought. This demonstrates his standing with his Lord, glorified be He: he interceded that revelation be granted to his brother, and Allah granted it—an immense honor indeed.
Allah, exalted is He, says, “He was highly esteemed in the sight of Allah” (al-Aḥzāb 33:69), and He says, “Out of Our mercy We bestowed upon him his brother Aaron, a prophet” (Maryam 19:53). And I have heard