Had We sent this as a Quran [in a language] other than Arabic, they would have said, "Why are its verses not clearly explained? What! An Arab Prophet, and a scripture in a foreign tongue?" Say, "It is a guide and a healing to those who believe; but for those who do not believe, there is a deafness in their ears, and a covering over their eyes: they are [as it were] being called from a very distant place."