O you who believe, devour not usury, doubling and redoubling, and keep your duty to Allah, that you may he successful. And guard yourselves against the fire which has been prepared for the disbelievers.
Ali: 6 As to those who reject Faith, it is the same to them whether thou warn them or do not warn them; they will not believe. Pickthall: 6 As for the Disbelievers, Whether thou warn them or thou warn them not it is all one for them; they believe not.
Disbelievers will want to come out of the Fire, but will not. Their will be a lasting doom.
Disbelievers will say when they see the Fire that they would have believed if they had known the truth. But they are all liars.
Ali: 24 But if ye cannot- and of a surety ye cannot- then fear the Fire whose fuel is men and stones,- which is prepared for those who reject Faith. Pickthall: 24 And if ye do it not - and ye can never do it - then guard yourselves against the Fire prepared for Disbelievers, whose fuel is of men and stones.
Christians are Disbelievers for believing in the divinity of Christ.
Don't choose Jews, Christians, or Disbelievers as guardians.
Those who disbelieve in Allah and His messengers and desire to make a distinction between Allah and His messengers and say: We believe in some and disbelieve in others; and desire to take a course in between -- These are truly Disbelievers and We have prepared for the Disbelievers an abasing chastisement.
This -- and (know) that Allah will weaken the struggle of the Disbelievers. If you sought a judgment, the judgment has indeed come to you and if you desist, it is better for you. And if you return (to fight), We (too) shall return and your forces will avail you nothing, though they may be many; and (know) that Allah is with the believers.
Certainly Allah helped you in many battlefields, and on the day of Hunain, when your great numbers made you proud, but they availed you nothing, and the earth with all its spaciousness was straitened for you, then you turned back retreating. Then Allah sent down His calm upon His Messenger and upon the believers, and sent hosts which you saw not, and chastised those who disbelieved. And such is the reward of the Disbelievers.
Muslims that make friends with Disbelievers will face a doom prepared for them by God.