Surah At-Takwir Verse 20

5989 Not only was the bringer of the Revelation. Gabriel, an honourable Messenger, incapable of deceit, but he had, in the angelic kingdom, rank and authority before Allah's Throne, and he could convey an authoritative divine Message. He was, like the Prophet, faithful to his trust; and therefore there could be no question of the Message being delivered in any other way than exactly according to the divine Will and Purpose. These epithets could apply to the Prophet himself, but in view of verse 23 below, it is best to understand them of Gabriel.