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

(411) O Prophet (Muhammad صلى الله عليه وسلم)! Strive hard against the disbelievers and the hypocrites, and be harsh against them, their abode is Hell, - and worst indeed is that destination.

(412) They swear by Allah that they said nothing (bad), but really they said the word of disbelief, and they disbelieved after accepting Islam, and they resolved that (plot to murder Prophet Muhammad صلى الله عليه وسلم) which they were unable to carry out, and they could not find any cause to do so except that Allah and His Messenger had enriched them of His Bounty. If then they repent, it will be better for them, but if they turn away, Allah will punish them with a painful torment in this worldly life and in the Hereafter. And there is none for them on earth as a Wali (supporter, protector) or a helper.

(413) Those who defame such of the believers who give charity (in Allah's Cause) voluntarily, and such who could not find to give charity (in Allah's Cause) except what is available to them - so they mock at them (believers); Allah will throw back their mockery on them, and they shall have a painful torment.

(414) Whether you (O Muhammad صلى الله عليه وسلم) ask forgiveness for them (hypocrites) or ask not forgiveness for them - (and even) if you ask seventy times for their forgiveness - Allah will not forgive them because they have disbelieved in Allah and His Messenger (Muhammad صلى الله عليه وسلم). And Allah guides not those people who are Fasiqun (rebellious, disobedient to Allah).

(415) And never (O Muhammad صلى الله عليه وسلم) pray (funeral prayer) for any of them (hypocrites) who dies, nor stand at his grave. Certainly they disbelieved in Allah and His Messenger, and died while they were Fasiqun (rebellious, - disobedient to Allah and His Messenger صلى الله عليه وسلم).

(416) And let not their wealth or their children amaze you. Allah's Plan is to punish them with these things in this world, and that their souls shall depart (die) while they are disbelievers.

(417) And when a Surah (chapter from the Qur'an) is revealed, enjoining them to believe in Allah and to strive hard and fight along with His Messenger, the wealthy among them ask your leave to exempt them (from Jihad) and say, "Leave us (behind), we would be with those who sit (at home)."

(418) But the Messenger (Muhammad صلى الله عليه وسلم) and those who believed with him (in Islamic Monotheism) strove hard and fought with their wealth and their lives (in Allah's Cause). Such are they for whom are the good things, and it is they who will be successful.

(419) And those who made excuses from the bedouins came (to you, O Prophet صلى الله عليه وسلم) asking your permission to exempt them (from the battle), and those who had lied to Allah and His Messenger sat at home (without asking the permission for it); a painful torment will seize those of them who disbelieve.

(420) They (the hypocrites) will present their excuses to you (Muslims), when you return to them. Say (O Muhammad صلى الله عليه وسلم) "Present no excuses, we shall not believe you. Allah has already informed us of the news concerning you. Allah and His Messenger will observe your deeds. In the end you will be brought back to the All-Knower of the unseen and the seen, then He (Allah) will inform you of what you used to do." [Tafsir At-Tabari]