The word(s) "lest" appears 66 time(s) in 65 verse(s) in Quran in Mohsin Khan translation.

(11) And to Thamud (people, We sent) their brother Salih. He said: "O my people! Worship Allah! You have no other Ilah (God) but Him. (La ilaha illallah: none has the right to be worshipped but Allah). Indeed there has come to you a clear sign (the miracle of the coming out of a huge she-camel from the midst of a rock) from your Lord. This she-camel of Allah is a sign unto you; so you leave her to graze in Allah's earth, and touch her not with harm, lest a painful torment should seize you.

(12) And (remember) when your Lord brought forth from the Children of Adam, from their loins, their seed (or from Adam's loin his offspring) and made them testify as to themselves (saying): "Am I not your Lord?" They said: "Yes! We testify," lest you should say on the Day of Resurrection: "Verily, we have been unaware of this."

(13) Or lest you should say: "It was only our fathers afortime who took others as partners in worship along with Allah, and we were (merely their) descendants after them; will You then destroy us because of the deeds of men who practised Al-Batil (i.e. polytheism and committing crimes and sins, invoking and worshipping others besides Allah)?" (Tafsir At-Tabari).

(14) And obey Allah and His Messenger, and do not dispute (with one another) lest you lose courage and your strength departs, and be patient. Surely, Allah is with those who are As-Sabirun (the patient).

(15) The hypocrites fear lest a Surah (chapter of the Qur'an) should be revealed about them, showing them what is in their hearts. Say: "(Go ahead and) mock! But certainly Allah will bring to light all that you fear."

(16) But none believed in Musa (Moses) except the offspring of his people, because of the fear of Fir'aun (Pharaoh) and his chiefs, lest they should persecute them; and verily, Fir'aun (Pharaoh) was an arrogant tyrant on the earth, he was indeed one of the Musrifun (polytheists, sinners and transgressors, those who give up the truth and follow the evil, and commit all kinds of great sins).

(17) He said: "O Nuh (Noah)! Surely, he is not of your family; verily, his work is unrighteous, so ask not of Me that of which you have no knowledge! I admonish you lest you should be one of the ignorant."

(18) "And O my people! This she-camel of Allah is a sign to you, so leave her to feed (graze) in Allah's land, and touch her not with evil, lest a near torment should seize you."

(19) And when Our messengers came to Lut (Lot), he was grieved on account of them and felt himself straitened for them (lest the town people should approach them to commit sodomy with them). He said: "This is a distressful day."

(20) So when Our Commandment came, We turned (the towns of Sodom in Palestine) upside down, and rained on them stones of baked clay, in a well-arranged manner one after another;