The word(s) "one" appears 1507 time(s) in 1150 verse(s) in Quran in Mohsin Khan translation.

(431) Those whose lives the angels take while they are in a pious state (i.e. pure from all evil, and worshipping none but Allah Alone) saying (to them): Salamun 'Alaikum (peace be on you) enter you Paradise, because of that (the good) which you used to do (in the world)."

(432) And verily, We have sent among every Ummah (community, nation) a Messenger (proclaiming): "Worship Allah (Alone), and avoid (or keep away from) Taghut (all false deities i.e. do not worship Taghut besides Allah)." Then of them were some whom Allah guided and of them were some upon whom the straying was justified. So travel through the land and see what was the end of those who denied (the truth).

(433) If you (O Muhammad صلى الله عليه و سلم) covet for their guidance, then verily Allah guides not those whom He makes to go astray (or none can guide him whom Allah sends astray). And they will have no helpers.

(434) In order that He may make manifest to them the truth of that wherein they differ, and that those who disbelieved (in Resurrection, and in the oneness of Allah) may know that they were liars.

(435) (They are) those who remained patient (in this world for Allah's sake), and put their trust in their Lord (Allah Alone).

(436) And We sent not (as Our Messengers) before you (O Muhammad صلى الله عليه و سلم) any but men, whom We sent revelation, (to preach and invite mankind to believe in the oneness of Allah). So ask (you, O pagans of Makkah) of those who know the Scripture [learned men of the Taurat (Torah) and the Injeel (Gospel)], if you know not.

(437) And Allah said (O mankind!): "Take not ilahain (two gods in worship). Verily, He (Allah) is (the) only one Ilah (God). Then, fear Me (Allah جل جلاله) much [and Me (Alone), i.e. be away from all kinds of sins and evil deeds that Allah has forbidden and do all that Allah has ordained and worship none but Allah] .

(438) To Him belongs all that is in the heavens and (all that is in) the earth and Ad-Din Wasiba is His [(i.e. perpetual sincere obedience to Allah is obligatory). None has the right to be worshipped but Allah)]. Will you then fear any other than Allah?

(439) And they assign a portion of that which We have provided them unto what they know not (false deities). By Allah, you shall certainly be questioned about (all) that you used to fabricate.

(440) And if Allah were to seize mankind for their wrong-doing, He would not leave on it (the earth) a single moving (living) creature, but He postpones them for an appointed term and when their term comes, neither can they delay nor can they advance it an hour (or a moment).