The word(s) "warner" appears 57 time(s) in 53 verse(s) in Quran in Muhammad Habib Shakir translation.

(41) (The warner) said: What! even if I bring to you a better guide than that on which you found your fathers? They said: Surely we are unbelievers in that with which you are sent.

(42) Say: I am not the first of the apostles, and I do not know what will be done with me or with you: I do not follow anything but that which is revealed to me, and I am nothing but a plain warner.

(43) And mention the brother of Ad; when he warned his people in the sandy plains,-- and indeed warners came before him and after him-- saying Serve none but Allah; surely I fear for you the punishment of a grievous day.

(44) Surely We have sent you as a witness and as a bearer of good news and as a warner,

(45) Nay! they wonder that there has come to them a warner from among themselves, so the unbelievers say: This is a wonderful thing:

(46) Therefore fly to Allah, surely I am a plain warner to you from Him.

(47) And do not set up with Allah another god: surely I am a plain warner to you from Him.

(48) This is a warner of the warners of old.

(49) Almost bursting for fury. Whenever a group is cast into it, its keeper shall ask them: Did there not come to you a warner?

(50) They shall say: Yea! indeed there came to us a warner, but we rejected (him) and said: Allah has not revealed anything, you are only in a great error.