What does « Eternity » mean in the Quran?

Allah will say, "This is the Day when the truthful will benefit from their truthfulness." For them are gardens [in Paradise] beneath which rivers flow, wherein they will abide forever, Allah being pleased with them, and they with Him. That is the great attainment.

[They will be] abiding therein forever. Indeed, Allah has with Him a great reward.

If Allah should return you to a faction of them [after the expedition] and then they ask your permission to go out [to battle], say, "You will not go out with me, ever, and you will never fight with me an enemy. Indeed, you were satisfied with sitting [at home] the first time, so sit [now] with those who stay behind."

And do not pray [the funeral prayer, O Muhammad], over any of them who has died - ever - or stand at his grave. Indeed, they disbelieved in Allah and His Messenger and died while they were defiantly disobedient.

And the first forerunners [in the faith] among the Muhajireen and the Ansar and those who followed them with good conduct - Allah is pleased with them and they are pleased with Him, and He has prepared for them gardens beneath which rivers flow, wherein they will abide forever. That is the great attainment.

Do not stand [for prayer] within it - ever. A mosque founded on righteousness from the first day is more worthy for you to stand in. Within it are men who love to purify themselves; and Allah loves those who purify themselves.

In which they will remain forever

Indeed, if they come to know of you, they will stone you or return you to their religion. And never would you succeed, then - ever."

And he entered his garden while he was unjust to himself. He said, "I do not think that this will perish - ever.

And who is more unjust than one who is reminded of the verses of his Lord but turns away from them and forgets what his hands have put forth? Indeed, We have placed over their hearts coverings, lest they understand it, and in their ears deafness. And if you invite them to guidance - they will never be guided, then - ever.

And those who accuse chaste women and then do not produce four witnesses - lash them with eighty lashes and do not accept from them testimony ever after. And those are the defiantly disobedient,

Allah warns you against returning to the likes of this [conduct], ever, if you should be believers.

O you who have believed, do not follow the footsteps of Satan. And whoever follows the footsteps of Satan - indeed, he enjoins immorality and wrongdoing. And if not for the favor of Allah upon you and His mercy, not one of you would have been pure, ever, but Allah purifies whom He wills, and Allah is Hearing and Knowing.

O you who have believed, do not enter the houses of the Prophet except when you are permitted for a meal, without awaiting its readiness. But when you are invited, then enter; and when you have eaten, disperse without seeking to remain for conversation. Indeed, that [behavior] was troubling the Prophet, and he is shy of [dismissing] you. But Allah is not shy of the truth. And when you ask [his wives] for something, ask them from behind a partition. That is purer for your hearts and their hearts. And it is not [conceivable or lawful] for you to harm the Messenger of Allah or to marry his wives after him, ever. Indeed, that would be in the sight of Allah an enormity.

Abiding therein forever, they will not find a protector or a helper.

But you thought that the Messenger and the believers would never return to their families, ever, and that was made pleasing in your hearts. And you assumed an assumption of evil and became a people ruined."

Have you not considered those who practice hypocrisy, saying to their brothers who have disbelieved among the People of the Scripture, "If you are expelled, we will surely leave with you, and we will not obey, in regard to you, anyone - ever; and if you are fought, we will surely aid you." But Allah testifies that they are liars.

There has already been for you an excellent pattern in Abraham and those with him, when they said to their people, "Indeed, we are disassociated from you and from whatever you worship other than Allah. We have denied you, and there has appeared between us and you animosity and hatred forever until you believe in Allah alone" except for the saying of Abraham to his father, "I will surely ask forgiveness for you, but I have not [power to do] for you anything against Allah. Our Lord, upon You we have relied, and to You we have returned, and to You is the destination.

But they will not wish for it, ever, because of what their hands have put forth. And Allah is Knowing of the wrongdoers.

The Day He will assemble you for the Day of Assembly - that is the Day of Deprivation. And whoever believes in Allah and does righteousness - He will remove from him his misdeeds and admit him to gardens beneath which rivers flow, wherein they will abide forever. That is the great attainment.

[He sent] a Messenger [Muhammad] reciting to you the distinct verses of Allah that He may bring out those who believe and do righteous deeds from darknesses into the light. And whoever believes in Allah and does righteousness - He will admit him into gardens beneath which rivers flow to abide therein forever. Allah will have perfected for him a provision.

But [I have for you] only notification from Allah, and His messages." And whoever disobeys Allah and His Messenger - then indeed, for him is the fire of Hell; they will abide therein forever.

Their reward with Allah will be gardens of perpetual residence beneath which rivers flow, wherein they will abide forever, Allah being pleased with them and they with Him. That is for whoever has feared his Lord.