The word(s) "believers" appears 593 time(s) in 512 verse(s) in Quran in Mohsin Khan translation.

(251) And for every nation We have appointed religious ceremonies, that they may mention the Name of Allah over the beast of cattle that He has given them for food. And your Ilah (God) is One Ilah (God - Allah), so you must submit to Him Alone (in Islam). And (O Muhammad صلى الله عليه وسلم) give glad tidings to the Mukhbitun (those who obey Allah with humility and are humble from among the true believers of Islamic Monotheism),

(252) Permission to fight (against disbelievers) is given to those (believers) who are fought against, because they have been wronged; and surely, Allah is Able to give them (believers) victory -

(253) And the dwellers of Madyan (Midian); and belied was Musa (Moses). But I granted respite to the disbelievers for a while, then I seized them, and how (terrible) was My punishment (against their wrong-doing)!

(254) That He (Allah) may make what is thrown in by Shaitan (Satan) a trial for those in whose hearts is a disease (of hypocrisy and disbelief) and whose hearts are hardened. And certainly, the Zalimun (polytheists and wrong-doers) are in an opposition far-off (from the truth against Allah's Messenger and the believers).

(255) And they worship besides Allah others for which He has sent down no authority, and of which they have no knowledge; and for the Zalimun (wrong-doers, polytheists and disbelievers in the Oneness of Allah) there is no helper.

(256) And when Our Clear Verses are recited to them, you will notice a denial on the faces of the disbelievers! They are nearly ready to attack with violence those who recite Our Verses to them. Say: "Shall I tell you of something worse than that? The Fire (of Hell) which Allah has promised to those who disbelieved, and worst indeed is that destination!"

(257) Successful indeed are the believers.

(258) So As-Saihah (torment - awful cry) overtook them in truth (with justice), and We made them as rubbish of dead plants. So away with the people who are Zalimun (polytheists, wrong-doers, disbelievers in the Oneness of Allah, disobedient to His Messengers).

(259) Or say they: There is madness in him? Nay, but he brought them the truth [i.e. Tauhid: Worshipping Allah Alone in all aspects, the Qur'an and the religion of Islam], but most of them (the disbelievers) are averse to the truth.

(260) Nay, but We have brought them the truth (Islamic Monotheism), and verily, they (disbelievers) are liars.