The word(s) "believer" appears 350 time(s) in 314 verse(s) in Quran in Muhammad Pickthal translation.

(131) But as for those in whose hearts is disease, it only addeth wickedness to their wickedness, and they die while they are disbelievers.

(132) There hath come unto you a messenger, (one) of yourselves, unto whom aught that ye are overburdened is grievous, full of concern for you, for the believers full of pity, merciful.

(133) Is it a wonder for mankind that We have inspired a man among them, saying: Warn mankind and bring unto those who believe the good tidings that they have a sure footing with their Lord? The disbelievers say: Lo! this is a mere wizard.

(134) O mankind! There hath come unto you an exhortation from your Lord, a balm for that which is in the breasts, a guidance and a mercy for believers.

(135) And We inspired Moses and his brother, (saying): Appoint houses for your people in Egypt and make your houses oratories, and establish worship. And give good news to the believers.

(136) And if thy Lord willed, all who are in the earth would have believed together. Wouldst thou (Muhammad) compel men until they are believers?

(137) Then shall We save Our messengers and the believers, in like manner (as of old). It is incumbent upon Us to save believers.

(138) Say (O Muhammad): O mankind! If ye are in doubt of my religion, then (know that) I worship not those whom ye worship instead of Allah, but I worship Allah Who causeth you to die, and I have been commanded to be of the believers.

(139) Who debar (men) from the way of Allah and would have it crooked, and who are disbelievers in the Hereafter.

(140) And it sailed with them amid waves like mountains, and Noah cried unto his son - and he was standing aloof - O my son! Come ride with us, and be not with the disbelievers.