The word(s) "believe" appears 1141 time(s) in 920 verse(s) in Quran in Muhammad Pickthal translation.

(311) That (is the case); and (know) that Allah (it is) Who maketh weak the plan of disbelievers.

(312) (O Qureysh!) If ye sought a judgment, now hath the judgment come unto you. And if ye cease (from persecuting the believers) it will be better for you, but if ye return (to the attack) We also shall return. And your host will avail you naught, however numerous it be, and (know) that Allah is with the believers (in His Guidance).

(313) O ye who believe! Obey Allah and His messenger, and turn not away from him when ye hear (him speak).

(314) O ye who believe! Obey Allah, and the messenger when He calleth you to that which quickeneth you, and know that Allah cometh in between the man and his own heart, and that He it is unto Whom ye will be gathered.

(315) O ye who believe! Betray not Allah and His messenger, nor knowingly betray your trusts.

(316) O ye who believe! If ye keep your duty to Allah, He will give you discrimination (between right and wrong) and will rid you of your evil thoughts and deeds, and will forgive you. Allah is of Infinite Bounty.

(317) And when those who disbelieve plot against thee (O Muhammad) to wound thee fatally, or to kill thee or to drive thee forth; they plot, but Allah (also) plotteth; and Allah is the best of plotters.

(318) And their worship at the (holy) House is naught but whistling and hand-clapping. Therefore (it is said unto them): Taste of the doom because ye disbelieve.

(319) Lo! those who disbelieve spend their wealth in order that they may debar (men) from the way of Allah. They will spend it, then it will become an anguish for them, then they will be conquered. And those who disbelieve will be gathered unto hell,

(320) Tell those who disbelieve that if they cease (from persecution of believers) that which is past will be forgiven them; but if they return (thereto) then the example of the men of old hath already gone (before them, for a warning).