These verses speak of the Prophet Muhammad ﷺ, a bringer of good tidings and a warner, sent with guidance and truth as a mercy to the worlds, with a message addressed to all people. They show Allah defending him and strengthening his heart against those who called him a sorcerer, a poet or a soothsayer, and recall that he is a human being and that obeying the Messenger is obeying Allah.
Verses gathered from a topical index of the Quran, in Mushaf order; every verse is quoted in full.
Do not make [your] calling of the Messenger among yourselves as the call of one of you to another. Already Allāh knows those of you who slip away, concealed by others. So let those beware who dissent from his [i.e., the Prophet's] order, lest fitnah strike them or a painful punishment.