The word(s) "warner" appears 58 time(s) in 54 verse(s) in Quran in Mohsin Khan translation.

(11) And say (O Muhammad صلى الله عليه و سلم): "I am indeed a plain warner."

(12) And with truth We have sent it down (i.e. the Qur'an), and with truth it has descended. And We have sent you (O Muhammad صلى الله عليه و سلم) as nothing but a bearer of glad tidings (of Paradise for those who follow your Message of Islamic Monotheism), and a warner (of Hell-fire for those who refuse to follow your Message of Islamic Monotheism) .

(13) And We send not the Messengers except as givers of glad tidings and warners. But those who disbelieve, dispute with false argument, in order to refute the truth thereby. And they treat My Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.), and that with which they are warned, as a jest and mockery!

(14) Say (O Muhammad صلى الله عليه وسلم): "O mankind! I am (sent) to you only as a plain warner."

(15) Blessed be He Who sent down the criterion (of right and wrong, i.e. this Qur'an) to His slave (Muhammad صلى الله عليه وسلم) that he may be a warner to the 'Alamin (mankind and jinn).

(16) And they say: "Why does this Messenger (Muhammad صلى الله عليه وسلم) eat food, and walk about in the markets (as we). Why is not an angel sent down to him to be a warner with him?

(17) And had We willed, We would have raised a warner in every town.

(18) And We have sent you (O Muhammad صلى الله عليه وسلم) only as a bearer of glad tidings and a warner.

(19) I am only a plain warner."

(20) Upon your heart (O Muhammad صلى الله عليه وسلم) that you may be (one) of the warners,