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

(261) (Then they will say): Our Lord relieve us of the torment. Lo! we are believers.

(262) Lo! in the heavens and the earth are portents for believers.

(263) Have they not travelled in the land to see the nature of the consequence for those who were before them? Allah wiped them out. And for the disbelievers there will be the like thereof.

(264) That is because Allah is patron of those who believe, and because the disbelievers have no patron.

(265) Lo! those who disbelieve and turn from the way of Allah and then die disbelievers, Allah surely will not pardon them.

(266) He it is Who sent down peace of reassurance into the hearts of the believers that they might add faith unto their faith. Allah's are the hosts of the heavens and the earth, and Allah is ever Knower, Wise -

(267) Nay, but ye deemed that the messenger and the believers would never return to their own folk, and that was made fairseeming in your hearts, and ye did think an evil thought, and ye were worthless folk.

(268) And so for him who believeth not in Allah and His messenger - Lo! We have prepared a flame for disbelievers.

(269) Allah was well pleased with the believers when they swore allegiance unto thee beneath the tree, and He knew what was in their hearts, and He sent down peace of reassurance on them, and hath rewarded them with a near victory;

(270) Allah promiseth you much booty that ye will capture, and hath given you this in advance, and hath withheld men's hands from you, that it may be a token for the believers, and that He may guide you on a right path.