The word(s) "keep" appears 132 time(s) in 129 verse(s) in Quran in Muhammad Pickthal translation.

(21) Unto Allah belongeth whatsoever is in the heavens and whatsoever is in the earth. And We charged those who received the Scripture before you, and (We charge) you, that ye keep your duty toward Allah. And if ye disbelieve, lo! unto Allah belongeth whatsoever is in the heavens and whatsoever is in the earth, and Allah is ever Absolute, Owner of Praise.

(22) If ye do good openly or keep it secret, or forgive evil, lo! Allah is ever Forgiving, Powerful.

(23) O ye who believe! Profane not Allah's monuments nor the Sacred Month nor the offerings nor the garlands, nor those repairing to the Sacred House, seeking the grace and pleasure of their Lord. But when ye have left the sacred territory, then go hunting (if ye will). And let not your hatred of a folk who (once) stopped your going to the inviolable place of worship seduce you to transgress; but help ye one another unto righteousness and pious duty. Help not one another unto sin and transgression, but keep your duty to Allah. Lo! Allah is severe in punishment.

(24) Remember Allah's grace upon you and His covenant by which He bound you when ye said: We hear and we obey; And keep your duty to Allah. Lo! He knoweth what is in the breasts (of men).

(25) O ye who believe! Remember Allah's favour unto you, how a people were minded to stretch out their hands against you but He withheld their hands from you; and keep your duty to Allah. In Allah let believers put their trust.

(26) O Ye who believe! Choose not for guardians such of those who received the Scripture before you, and of the disbelievers, as make a jest and sport of your religion. But keep your duty to Allah if ye are true believers.

(27) Eat of that which Allah hath bestowed on you as food lawful and good, and keep your duty to Allah in Whom ye are believers.

(28) Allah will not take you to task for that which is unintentional in your oaths, but He will take you to task for the oaths which ye swear in earnest. The expiation thereof is the feeding of ten of the needy with the average of that wherewith ye feed your own folk, or the clothing of them, or the liberation of a slave, and for him who findeth not (the wherewithal to do so) then a three days' fast. This is the expiation of your oaths when ye have sworn; and keep your oaths. Thus Allah expoundeth unto you His revelations in order that ye may give thanks.

(29) Naught is the life of the world save a pastime and a sport. Better far is the abode of the Hereafter for those who keep their duty (to Allah). Have ye then no sense?

(30) Proofs have come unto you from your Lord, so whoso seeth, it is for his own good, and whoso is blind is blind to his own hurt. And I am not a keeper over you.