The word(s) "believer" appears 297 time(s) in 275 verse(s) in Quran in Muhammad Habib Shakir translation.

(91) So you did not slay them, but it was Allah Who slew them, and you did not smite when you smote (the enemy), but it was Allah Who smote, and that He might confer upon the believers a good gift from Himself; surely Allah is Hearing, Knowing.

(92) This, and that Allah is the weakener of the struggle of the unbelievers.

(93) If you demanded a judgment, the judgment has then indeed come to you; and if you desist, it will be better for you; and if you turn back (to fight), We (too) shall turn back, and your forces shall avail you nothing, though they may be many, and (know) that Allah is with the believers.

(94) And if they intend to deceive you-- then surely Allah is sufficient for you; He it is Who strengthened you with His help and with the believers

(95) O Prophet! Allah is sufficient for you and (for) such of the believers as follow you.

(96) O Prophet! urge the believers to war; if there are twenty patient ones of you they shall overcome two hundred, and if there are a hundred of you they shall overcome a thousand of those who disbelieve, because they are a people who do not understand.

(97) And (as for) those who believed and fled and struggled hard in Allah's way, and those who gave shelter and helped, these are the believers truly; they shall have forgiveness and honorable provision.

(98) So go about in the land for four months and know that you cannot weaken Allah and that Allah will bring disgrace to the unbelievers.

(99) They do not pay regard to ties of relationship nor those of covenant in the case of a believer; and these are they who go beyond the limits.

(100) What! will you not fight a people who broke their oaths and aimed at the expulsion of the Apostle, and they attacked you first; do you fear them? But Allah is most deserving that you should fear Him, if you are believers.