The word(s) "turn" appears 446 time(s) in 410 verse(s) in Quran in Mohsin Khan translation.

(341) And indeed We have destroyed towns (populations) round about you, and We have (repeatedly) shown (them) the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) in various ways that they might return (to the truth and believe in the Oneness of Allah - Islamic Monotheism).

(342) And (remember) when We sent towards you (Muhammad صلى الله عليه وسلم) a group (three to ten persons) of the jinn, (quietly) listening to the Qur'an. When they stood in the presence thereof, they said: "Listen in silence!" And when it was finished, they returned to their people, as warners.

(343) Verily, those who have turned back (have apostatised) as disbelievers after the guidance has been manifested to them - Shaitan (Satan) has beautified for them (their false hopes), and (Allah) prolonged their term (age).

(344) Behold! You are those who are called to spend in the Cause of Allah, yet among you are some who are niggardly. And whoever is niggardly, it is only at the expense of his ownself. But Allah is Rich (Free of all needs), and you (mankind) are poor. And if you turn away (from Islam and the obedience to Allah), He will exchange you for some other people and they will not be your likes.

(345) "Nay, but you thought that the Messenger (صلى الله عليه وسلم) and the believers would never return to their families, and that was made fair-seeming in your hearts, and you did think an evil thought and you became a useless people going for destruction."

(346) Say (O Muhammad صلى الله عليه وسلم) to the bedouins who lagged behind: "You shall be called to fight against a people given to great warfare, then you shall fight them, or they shall surrender. Then if you obey, Allah will give you a fair reward; but if you turn away as you did turn away before, He will punish you with a painful torment."

(347) No blame or sin is there upon the blind, nor is there blame or sin upon the lame, nor is there blame or sin upon the sick (that they go not for fighting). And whosoever obeys Allah and His Messenger (Muhammad صلى الله عليه وسلم), He will admit him to Gardens beneath which rivers flow (Paradise); and whosoever turns back, He will punish him with a painful torment.

(348) And if those who disbelieve fight against you, they certainly would have turned their backs; then they would have found neither a Wali (protector, guardian) nor a helper.

(349) "When we are dead and have become dust (shall we be resurrected?) That is a far return."

(350) An insight and a Reminder for every slave who turns to Allah in repentance (i.e. the one who believes in the Oneness of Allah and performs deeds of His obedience, and always begs His pardon).