The word(s) "serve" appears 100 time(s) in 96 verse(s) in Quran in Muhammad Pickthal translation.

(61) And Abraham! (Remember) when he said unto his folk: serve Allah, and keep your duty unto Him; that is better for you if ye did but know.

(62) Ye serve instead of Allah only idols, and ye only invent a lie. Lo! those whom ye serve instead of Allah own no provision for you. So seek your provision from Allah, and serve Him, and give thanks unto Him, (for) unto Him ye will be brought back.

(63) And unto Midian We sent Shu'eyb, their brother. He said: O my people! serve Allah, and look forward to the Last Day, and do not evil, making mischief, in the earth.

(64) And (the tribes of) A'ad and Thamud! (Their fate) is manifest unto you from their (ruined and deserted) dwellings. Satan made their deeds seem fair unto them and so debarred them from the Way, though they were keen observers.

(65) Recite that which hath been inspired in thee of the Scripture, and establish worship. Lo! worship preserveth from lewdness and iniquity, but verily remembrance of Allah is more important. And Allah knoweth what ye do.

(66) O my bondmen who believe! Lo! My earth is spacious. Therefor serve Me only.

(67) Is it not a guidance for them (to observe) how many generations We destroyed before them, amid whose dwelling places they do walk? Lo! therein verily are portents! Will they not then heed?

(68) Say: Who is he who can preserve you from Allah if He intendeth harm for you, or intendeth mercy for you. They will not find that they have any friend or helper other than Allah.

(69) And those who malign believing men and believing women undeservedly, they bear the guilt of slander and manifest sin.

(70) Have they not observed what is before them and what is behind them of the sky and the earth? If We will, We can make the earth swallow them, or cause obliteration from the sky to fall on them. Lo! herein surely is a portent for every slave who turneth (to Allah) repentant.