Say: Whoever is the enemy of Jibreel-- for surely he revealed it to your heart by Allah's command, verifying that which is before it and guidance and good news for the believers.

Allah has not made for any man two hearts within him; nor has He made your wives whose backs you liken to the backs of your mothers as your mothers, nor has He made those whom you assert to be your sons your real sons; these are the words of your mouths; and Allah speaks the truth and He guides to the way.

And when Musa said to his people: O my people! why do you give me trouble? And you know indeed that I am Allah's messenger to you; but when they turned aside, Allah made their hearts turn aside, and Allah does not guide the transgressing people.

And We have not made the wardens of the fire others than angels, and We have not made their number but as a trial for those who disbelieve, that those who have been given the book may be certain and those who believe may increase in faith, and those who have been given the book and the believers may not doubt, and that those in whose hearts is a disease and the unbelievers may say: What does Allah mean by this parable? Thus does Allah make err whom He pleases, and He guides whom He pleases, and none knows the hosts of your Lord but He Himself; and this is naught but a reminder to the mortals.