The word(s) "revelation" appears 70 time(s) in 67 verse(s) in Quran in Abdullah Yusuf Ali translation.

(31) They say: "Why does he not bring us a sign from his Lord?" Has not a Clear Sign come to them of all that was in the former Books of revelation?

(32) Say, "I do but warn you according to revelation": But the deaf will not hear the call, (even) when they are warned!

(33) Those who reject Faith will not cease to be in doubt concerning (revelation) until the Hour (of Judgment) comes suddenly upon them, or there comes to them the Penalty of a Day of Disaster.

(34) And strive in His cause as ye ought to strive, (with sincerity and under discipline). He has chosen you, and has imposed no difficulties on you in religion; it is the cult of your father Abraham. It is He Who has named you Muslims, both before and in this (revelation); that the Messenger may be a witness for you, and ye be witnesses for mankind! So establish regular Prayer, give regular Charity, and hold fast to Allah! He is your Protector - the Best to protect and the Best to help!

(35) Verily this is a revelation from the Lord of the Worlds:

(36) No evil ones have brought down this (revelation):

(37) Those to whom We sent the Book before this,- they do believe in this (revelation):

(38) And We gave (Abraham) Isaac and Jacob, and ordained among his progeny Prophethood and revelation, and We granted him his reward in this life; and he was in the Hereafter (of the company) of the Righteous.

(39) And dispute ye not with the People of the Book, except with means better (than mere disputation), unless it be with those of them who inflict wrong (and injury): but say, "We believe in the revelation which has come down to us and in that which came down to you; Our Allah and your Allah is one; and it is to Him we bow (in Islam)."

(40) When they are told to follow the (revelation) that Allah has sent down, they say: "Nay, we shall follow the ways that we found our fathers (following). "What! even if it is Satan beckoning them to the Penalty of the (Blazing) Fire?