The word(s) "believe" appears 1522 time(s) in 1179 verse(s) in Quran in Mohsin Khan translation.

(541) And We sent not (as Our Messengers) before you (O Muhammad صلى الله عليه و سلم) any but men, whom We sent revelation, (to preach and invite mankind to believe in the Oneness of Allah). So ask (you, O pagans of Makkah) of those who know the Scripture [learned men of the Taurat (Torah) and the Injeel (Gospel)], if you know not.

(542) For those who believe not in the Hereafter is an evil description, and for Allah is the highest description. And He is the All-Mighty, the All-Wise.

(543) And We have not sent down the Book (the Qur'an) to you (O Muhammad صلى الله عليه و سلم), except that you may explain clearly unto them those things in which they differ, and (as) a guidance and a mercy for a folk who believe.

(544) And Allah has made for you Azwaj (mates or wives) of your own kind, and has made for you, from your wives, sons and grandsons, and has bestowed on you good provision. Do they then believe in false deities and deny the Favour of Allah (by not worshipping Allah Alone).

(545) Allah puts forward the example of (two men - a believer and a disbeliever); a slave (disbeliever) under the possession of another, he has no power of any sort, and (the other), a man (believer) on whom We have bestowed a good provision from Us, and he spends thereof secretly and openly. Can they be equal? (By no means). All the praises and thanks are to Allah. Nay! (But) most of them know not.

(546) And Allah puts forward (another) example of two men, one of them dumb, who has no power over anything (disbeliever), and he is a burden on his master; whichever way he directs him, he brings no good. Is such a man equal to one (believer in the Islamic Monotheism) who commands justice, and is himself on the Straight Path?

(547) Do they not see the birds held (flying) in the midst of the sky? None holds them but Allah [none gave them the ability to fly but Allah]. Verily, in this are clear Ayat (proofs and signs) for people who believe (in the Oneness of Allah).

(548) They recognise the Grace of Allah, yet they deny it (by worshipping others besides Allah) and most of them are disbelievers (deny the Prophethood of Muhammad صلى الله عليه و سلم).

(549) And (remember) the Day when We shall raise up from each nation a witness (their Messenger), then, those who disbelieved will not be given leave (to put forward excuses), nor will they be allowed (to return to the world) to repent and ask for Allah's Forgiveness (of their sins).

(550) And when those who did wrong (the disbelievers) will see the torment, then it will not be lightened unto them, nor will they be given respite.