"They swear their strongest oaths by Allah, that if a (special) sign came to them, by it they would believe. Say: "Certainly (all) signs are in the power of Allah: but what will make you (Muslims) realise that (even) if (special) signs came, they will not believe"? We (too) shall turn to (confusion) their hearts and their eyes, even as they refused to believe in this in the first instance: We shall leave them in their trespasses, to wander in distraction. Even if We did send unto them angels, and the dead did speak unto them, and We gathered together all things before their very eyes, they are not the ones to believe, unless it is in Allah's plan. But most of them ignore (the truth). Likewise did We make for every Messenger an enemy,- evil ones among men and jinns, inspiring each other with flowery discourses by way of deception. If thy Lord had so planned, they would not have done it: so leave them and their inventions alone. To such (deceit) let the hearts of those incline, who have no faith in the hereafter: let them delight in it, and let them earn from it what they may."