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

(31) So We saved him and those who were with him by a mercy from Us, and We cut the roots of those who belied Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.); and they were not believers.

(32) And when they regretted and saw that they had gone astray, they (repented and) said: "If our Lord have not mercy upon us and forgive us, we shall certainly be of the losers."

(33) Musa (Moses) said: "O my Lord! Forgive me and my brother, and admit us into Your mercy, for you are the Most Merciful of those who show mercy."

(34) And when the anger of Musa (Moses) was calmed down, he took up the Tablets; and in their inscription was guidance and mercy for those who fear their Lord.

(35) And Musa (Moses) chose out of his people seventy (of the best) men for Our appointed time and place of meeting, and when they were seized with a violent earthquake, he said: "O my Lord, if it had been Your Will, You could have destroyed them and me before; would You destroy us for the deeds of the foolish ones among us? It is only Your Trial by which You lead astray whom You will, and keep guided whom You will. You are our Wali (Protector), so forgive us and have mercy on us: for You are the Best of those who forgive.

(36) "And ordain for us good in this world, and in the Hereafter. Certainly we have turned unto You." He said: (As to) My punishment I afflict therewith whom I will and My mercy embraces all things. That (mercy) I shall ordain for those who are the Muttaqun (the pious - See V.2:2), and give Zakat; and those who believe in Our Ayat (proofs, evidence, verses, lessons, signs and revelations, etc.);

(37) And if you do not bring them a miracle [according to their (i.e. Quraish-pagans') proposal], they say: "Why have you not brought it?" Say: "I but follow what is revealed to me from my Lord. This (the Qur'an) is nothing but evidence from your Lord, and a guidance and a mercy for a people who believe."

(38) So, when the Qur'an is recited, listen to it, and be silent that you may receive mercy. [i.e. during the compulsory congregational prayers when the Imam (of a mosque) is leading the prayer (except Surat Al-Fatihah), and also when he is delivering the Friday-prayer Khutbah]. (Tafsir At-Tabari).

(39) Their Lord gives them glad tidings of mercy from Him, and His being pleased (with them), and of Gardens (Paradise) for them wherein are everlasting delights.

(40) And among them are men who annoy the Prophet (Muhammad صلى الله عليه وسلم) and say: "He is (lending his) ear (to every news)." Say: "He listens to what is best for you; he believes in Allah, has faith in the believers, and is a mercy to those of you who believe." But those who annoy Allah's Messenger (Muhammad صلى الله عليه وسلم) will have a painful torment. [See V.33:57]