The word(s) "perceive" appears 25 time(s) in 24 verse(s) in Quran in Abdullah Yusuf Ali translation.

(11) But the (Penalty) will come to them of a sudden, while they perceive it not;

(12) Behold! Moses said to his family: "I perceive a fire; soon will I bring you from there some information, or I will bring you a burning brand to light our fuel, that ye may warm yourselves.

(13) They plotted and planned, but We too planned, even while they perceived it not.

(14) Say: None in the heavens or on earth, except Allah, knows what is hidden: nor can they perceive when they shall be raised up (for Judgment).

(15) The wife of Pharaoh said: "(Here is) joy of the eye, for me and for thee: slay him not. It may be that he will be use to us, or we may adopt him as a son." And they perceived not (what they were doing)!

(16) Now when Moses had fulfilled the term, and was travelling with his family, he perceived a fire in the direction of Mount Tur. He said to his family: "Tarry ye; I perceive a fire; I hope to bring you from there some information, or a burning firebrand, that ye may warm yourselves."

(17) They ask thee to hasten on the Punishment (for them): had it not been for a term (of respite) appointed, the Punishment would certainly have come to them: and it will certainly reach them,- of a sudden, while they perceive not!

(18) "Did we treat them (as such) in ridicule, or have (our) eyes failed to perceive them?"

(19) Those before them (also) rejected (revelation), and so the Punishment came to them from directions they did not perceive.

(20) "And follow the best of (the courses) revealed to you from your Lord, before the Penalty comes on you - of a sudden while ye perceive not!-