The word(s) "forever" appears 50 time(s) in 50 verse(s) in Quran in Mohsin Khan translation.

(1) And give glad tidings to those who believe and do righteous good deeds, that for them will be Gardens under which rivers flow (Paradise). Every time they will be provided with a fruit therefrom, they will say: "This is what we were provided with before," and they will be given things in resemblance (i.e. in the same form but different in taste) and they shall have therein Azwajun Mutahharatun (purified mates or wives) and they will abide therein forever.

(2) But those who disbelieve and belie Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) - such are the dwellers of the Fire. They shall abide therein forever.

(3) Yes! Whosoever earns evil and his sin has surrounded him, they are dwellers of the Fire (i.e. Hell); they will dwell therein forever.

(4) And those who believe (in the Oneness of Allah تعالى - Islamic Monotheism) and do righteous good deeds, they are dwellers of Paradise, they will dwell therein forever. (See V. 2:257)

(5) They ask you concerning fighting in the Sacred Months (i.e. 1st, 7th, 11th and 12th months of the Islamic calendar). Say "Fighting therein is a great (transgression) but a greater (transgression) with Allah is to prevent mankind from following the Way of Allah, to disbelieve in Him, to prevent access to Al-Masjid-Al-Haram (at Makkah), and to drive out its inhabitants, and Al-Fitnah is worse than killing. And they will never cease fighting you until they turn you back from your religion (Islamic Monotheism) if they can. And whosoever of you turns back from his religion and dies as a disbeliever, then his deeds will be lost in this life and in the Hereafter, and they will be the dwellers of the Fire. They will abide therein forever."

(6) Allah is the Wali (Protector or Guardian) of those who believe. He brings them out from darkness into light. But as for those who disbelieve, their Auliya (supporters and helpers) are Taghut [false deities and false leaders], they bring them out from light into darkness. Those are the dwellers of the Fire, and they will abide therein forever. (See V.2:81,82)

(7) And for those whose faces will become white, they will be in Allah's Mercy (Paradise), therein they shall dwell forever.

(8) For such, the reward is Forgiveness from their Lord, and Gardens with rivers flowing underneath (Paradise), wherein they shall abide forever. How excellent is this reward for the doers (who do righteous deeds according to Allah's Orders).

(9) But those who believe (in the Oneness of Allah - Islamic Monotheism) and do deeds of righteousness, We shall admit them to Gardens under which rivers flow (Paradise), abiding therein forever. Therein they shall have Azwajun Mutahharatun (purified mates or wives), and We shall admit them to shades wide and ever deepening (Paradise) .

(10) But those who believe (in the Oneness of Allah - Islamic Monotheism) and do deeds of righteousness, We shall admit them to the Gardens under which rivers flow (i.e. in Paradise) to dwell therein forever. Allah's Promise is the Truth; and whose words can be truer than those of Allah? (Of course, none).