The word(s) "serve" appears 32 time(s) in 30 verse(s) in Quran in Mohsin Khan translation.

(11) The dwellers of Paradise (i.e. those who deserved it through their Islamic Monotheistic Faith and their deeds of righteousness) will, on that Day, have the best abode, and have the fairest of places for repose.

(12) Do they not observe the earth - how much of every good kind We cause to grow therein?

(13) He said: "Do you observe that which you have been worshipping -

(14) He said: "I intend to wed one of these two daughters of mine to you, on condition that you serve me for eight years; but if you complete ten years, it will be (a favour) from you. But I intend not to place you under a difficulty. If Allah wills, you will find me one of the righteous."

(15) Nay, but they, the clear Ayat [i.e. the description and the qualities of Prophet Muhammad صلى الله عليه وسلم written in the Taurat (Torah) and the Injeel (Gospel)] are preserved in the breasts of those who have been given knowledge (among the people of the Scriptures). And none but the Zalimun (polytheists and wrongdoers) deny Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.).

(16) Verily, the Muslims (those who submit to Allah in Islam) men and women, the believers men and women (who believe in Islamic Monotheism), the men and the women who are obedient (to Allah), the men and women who are truthful (in their speech and deeds), the men and the women who are patient (in performing all the duties which Allah has ordered and in abstaining from all that Allah has forbidden), the men and the women who are humble (before their Lord - Allah), the men and the women who give Sadaqat (i.e. Zakat, and alms), the men and the women who observe Saum (fast) (the obligatory fasting during the month of Ramadan, and the optional Nawafil fasting), the men and the women who guard their chastity (from illegal sexual acts) and the men and the women who remember Allah much with their hearts and tongues Allah has prepared for them forgiveness and a great reward (i.e. Paradise).

(17) And those who annoy believing men and women undeservedly, they bear (on themselves) the crime of slander and plain sin.

(18) (Delicate and pure) as if they were (hidden) eggs (well) preserved.

(19) We know that which the earth takes of them (their dead bodies), and with Us is a Book preserved (i.e. the Book of Decrees).

(20) (It will be said): "This is what you were promised - (it is) for those oft-returning (to Allah) in sincere repentance, and those who preserve their covenant with Allah (by obeying Him in all what He has ordered, and worshipping none but Allah Alone, i.e. follow Allah's religion - Islamic Monotheism).