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.

Say: The Holy spirit has revealed it from your Lord with the truth, that it may establish those who believe and as a guidance and good news for those who submit.

And nothing prevented people from believing when the guidance came to them except that they said: What! has Allah raised up a mortal to be a messenger?

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.