The word(s) "kept" appears 20 time(s) in 20 verse(s) in Quran in Muhammad Pickthal translation.

(11) That was because their messengers kept bringing them clear proofs (of Allah's Sovereignty) but they disbelieved; so Allah seized them. Lo! He is Strong, severe in punishment.

(12) Friends on that day will be foes one to another, save those who kept their duty (to Allah).

(13) Lo! those who kept their duty will be in a place secured.

(14) And the Garden is brought nigh for those who kept from evil, no longer distant.

(15) And the sea kept filled,

(16) Lo! those who kept their duty dwell in gardens and delight,

(17) In a Book kept hidden

(18) On the day when Allah will raise them all together and inform them of what they did. Allah hath kept account of it while they forgot it. And Allah is Witness over all things.

(19) That was because their messengers (from Allah) kept coming unto them with clear proofs (of Allah's Sovereignty), but they said: Shall mere mortals guide us? So they disbelieved and turned away, and Allah was independent (of them). Allah is Absolute, Owner of Praise.

(20) Lo! those who kept their duty are amid shade and fountains,