The word(s) "wherewith" appears 21 time(s) in 15 verse(s) in Quran in Mohsin Khan translation.

(11) And thus We have sent to you (O Muhammad صلى الله عليه و سلم) Ruh (a Revelation, and a Mercy) of Our Command. You knew not what is the Book, nor what is Faith? But We have made it (this Qur'an) a light wherewith We guide whosoever of Our slaves We will. And verily, you (O Muhammad صلى الله عليه و سلم) are indeed guiding (mankind) to the Straight Path (i.e. Allah's Religion of Islamic Monotheism).

(12) Or (if) We show you that wherewith We threaten them: then verily We have perfect command over them.

(13) He said: "The knowledge (of the time of its coming) is with Allah only. And I convey to you that wherewith I have been sent, but I see that you are a people given to ignorance!"

(14) And indeed We had firmly established them with that wherewith We have not established you (O Quraish)! And We had assigned them the (faculties of) hearing (ears), seeing (eyes), and hearts; but their hearing (ears), seeing (eyes), and their hearts availed them nothing since they used to deny the Ayat (Allah's Prophets and their Prophethood, proofs, evidence, verses, signs, revelations) of Allah, and they were completely encircled by that which they used to mock at!

(15) Have you not seen those who were forbidden to hold secret counsels, and afterwards returned to that which they had been forbidden, and conspired together for sin and wrong doing and disobedience to the Messenger (Muhammad صلى الله عليه وسلم). And when they come to you, they greet you with a greeting wherewith Allah greets you not, and say within themselves: "Why should Allah punish us not for what we say?" Hell will be sufficient for them; they will burn therein. And worst indeed is that destination!