The word(s) "mercy" appears 168 time(s) in 158 verse(s) in Quran in Mohsin Khan translation.

(21) If they (Jews) belie you (Muhammad صلى الله عليه وسلم) say: "Your Lord is the Owner of Vast mercy, and never will His Wrath be turned back from the people who are Mujrimun (criminals, polytheists or sinners)."

(22) Then, We gave Musa (Moses) the Book [the Taurat (Torah)] to complete (Our Favour) upon those who would do right, and explaining all things in detail and a guidance and a mercy that they might believe in the meeting with their Lord.

(23) And this is a blessed Book (the Qur'an) which We have sent down, so follow it and fear Allah (i.e. do not disobey His Orders), that you may receive mercy (i.e. be saved from the torment of Hell).

(24) Or lest you (pagan Arabs) should say: "If only the Book had been sent down to us, we would surely have been better guided than they (Jews and Christians)." So now has come unto you a clear proof (the Qur'an) from your Lord, and a guidance and a mercy. Who then does more wrong than one who rejects the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) of Allah and turns away therefrom? We shall requite those who turn away from Our Ayat with an evil torment, because of their turning away (from them). [Tafsir At-Tabari]

(25) They said: "Our Lord! We have wronged ourselves. If You forgive us not, and bestow not upon us Your mercy, we shall certainly be of the losers."

(26) Are they those, of whom you swore that Allah would never show them mercy. (Behold! It has been said to them): "Enter Paradise, no fear shall be on you, nor shall you grieve."

(27) Certainly, We have brought them a Book (the Qur'an) which We have explained in detail with knowledge, - a guidance and a mercy to a people who believe.

(28) And do not do mischief on the earth, after it has been set in order, and invoke Him with fear and hope. Surely, Allah's mercy is (ever) near unto the good-doers.

(29) And it is He Who sends the winds as heralds of glad tidings, going before His mercy (rain). Till when they have carried a heavy-laden cloud, We drive it to a land that is dead, then We cause water (rain) to descend thereon. Then We produce every kind of fruit therewith. Similarly, We shall raise up the dead, so that you may remember or take heed.

(30) "Do you wonder that there has come to you a Reminder from your Lord through a man from amongst you, that he may warn you, so that you may fear Allah and that you may receive (His) mercy?"