Or do they say, "He has invented it?" Say, "If I have invented it, you will not possess for me [the power of protection] from Allah at all. He is most knowing of that in which you are involved. Sufficient is He as Witness between me and you, and He is the Forgiving the Merciful."
Say, "Have you considered: if the Qur'an was from Allah, and you disbelieved in it while a witness from the Children of Israel has testified to something similar and believed while you were arrogant... ?" Indeed, Allah does not guide the wrongdoing people.
And those who disbelieve say of those who believe, "If it had [truly] been good, they would not have preceded us to it." And when they are not guided by it, they will say, "This is an ancient falsehood."