The word(s) "know" appears 694 time(s) in 606 verse(s) in Quran in Muhammad Pickthal translation.

(511) And when it was said: Lo! Allah's promise is the truth, and there is no doubt of the Hour's coming, ye said: We know not what the Hour is. We deem it naught but a conjecture, and we are by no means convinced.

(512) Say (unto them, O Muhammad): Have ye thought on all that ye invoke beside Allah? Show me what they have created of the earth. Or have they any portion in the heavens? Bring me a scripture before this (Scripture), or some vestige of knowledge (in support of what ye say), if ye are truthful.

(513) Say: I am no new thing among the messengers (of Allah), nor know I what will be done with me or with you. I do but follow that which is inspired in me, and I am but a plain warner.

(514) He said: The knowledge is with Allah only. I convey unto you that wherewith I have been sent, but I see you are a folk that know not.

(515) And bring them in unto the Garden which He hath made known to them.

(516) Among them are some who give ear unto thee (Muhammad) till, when they go forth from thy presence they say unto those who have been given knowledge: What was that he said just now? Those are they whose hearts Allah hath sealed, and they follow their own lusts.

(517) So know (O Muhammad) that there is no Allah save Allah, and ask forgiveness for thy sin and for believing men and believing women. Allah knoweth (both) your place of turmoil and your place of rest.

(518) That is because they say unto those who hate what Allah hath revealed: We will obey you in some matters; and Allah knoweth their secret talk.

(519) And if We would, We could show them unto thee (Muhammad) so that thou shouldst know them surely by their marks. And thou shalt know them by the burden of their talk. And Allah knoweth your deeds.

(520) And verily We shall try you till We know those of you who strive hard (for the cause of Allah) and the steadfast, and till We test your record.