The word(s) "know" appears 814 time(s) in 684 verse(s) in Quran in Mohsin Khan translation.

(641) Nun. [These letters (Nun, etc.) are one of the miracles of the Qur'an, and none but Allah (Alone) knows their meanings]. By the pen and by what they (the angels) write (in the Records of men).

(642) Verily, your Lord is the Best knower of him who has gone astray from His Path, and He is the Best knower of those who are guided.

(643) And what will make you know what the Inevitable is?

(644) "And that I had never known how my Account is!

(645) And verily, We know that there are some among you that belie (this Qur'an). (Tafsir At-Tabari)

(646) No, that is not like that! Verily, We have created them out of that which they know!

(647) 'And we know not whether evil is intended for those on earth, or whether their Lord intends for them a Right Path.

(648) Till, when they see that which they are promised, then they will know who it is that is weaker concerning helpers and less important concerning numbers.

(649) Say (O Muhammad صلى الله عليه وسلم): "I know not whether (the punishment) which you are promised is near or whether my Lord will appoint for it a distant term.

(650) "(He Alone is) the All-knower of the Ghaib (Unseen), and He reveals to none His Ghaib (Unseen)."