What does « Servant / To worship » mean in the Quran?

Or were you witnesses when death approached Jacob, when he said to his sons, "What will you worship after me?" They said, "We will worship your God and the God of your fathers, Abraham and Ishmael and Isaac - one God. And we are Muslims [in submission] to Him."

O you who have believed, eat from the good things which We have provided for you and be grateful to Allah if it is [indeed] Him that you worship.

O you who have believed, prescribed for you is legal retribution for those murdered - the free for the free, the slave for the slave, and the female for the female. But whoever overlooks from his brother anything, then there should be a suitable follow-up and payment to him with good conduct. This is an alleviation from your Lord and a mercy. But whoever transgresses after that will have a painful punishment.

And when My servants ask you, [O Muhammad], concerning Me - indeed I am near. I respond to the invocation of the supplicant when he calls upon Me. So let them respond to Me [by obedience] and believe in Me that they may be [rightly] guided.

And of the people is he who sells himself, seeking means to the approval of Allah. And Allah is kind to [His] servants.

And do not marry polytheistic women until they believe. And a believing slave woman is better than a polytheist, even though she might please you. And do not marry polytheistic men [to your women] until they believe. And a believing slave is better than a polytheist, even though he might please you. Those invite [you] to the Fire, but Allah invites to Paradise and to forgiveness, by His permission. And He makes clear His verses to the people that perhaps they may remember.

Say, "Shall I inform you of [something] better than that? For those who fear Allah will be gardens in the presence of their Lord beneath which rivers flow, wherein they abide eternally, and purified spouses and approval from Allah. And Allah is Seeing of [His] servants -

So if they argue with you, say, "I have submitted myself to Allah [in Islam], and [so have] those who follow me." And say to those who were given the Scripture and [to] the unlearned, "Have you submitted yourselves?" And if they submit [in Islam], they are rightly guided; but if they turn away - then upon you is only the [duty of] notification. And Allah is Seeing of [His] servants.

The Day every soul will find what it has done of good present [before it] and what it has done of evil, it will wish that between itself and that [evil] was a great distance. And Allah warns you of Himself, and Allah is Kind to [His] servants."

Indeed, Allah is my Lord and your Lord, so worship Him. That is the straight path."

Say, "O People of the Scripture, come to a word that is equitable between us and you - that we will not worship except Allah and not associate anything with Him and not take one another as lords instead of Allah." But if they turn away, then say, "Bear witness that we are Muslims [submitting to Him]."

It is not for a human [prophet] that Allah should give him the Scripture and authority and prophethood and then he would say to the people, "Be servants to me rather than Allah," but [instead, he would say], "Be pious scholars of the Lord because of what you have taught of the Scripture and because of what you have studied."

That is for what your hands have put forth and because Allah is not ever unjust to [His] servants."

Worship Allah and associate nothing with Him, and to parents do good, and to relatives, orphans, the needy, the near neighbor, the neighbor farther away, the companion at your side, the traveler, and those whom your right hands possess. Indeed, Allah does not like those who are self-deluding and boastful.

Whom Allah has cursed. For he had said, "I will surely take from among Your servants a specific portion.

Never would the Messiah disdain to be a servant of Allah, nor would the angels near [to Him]. And whoever disdains His worship and is arrogant - He will gather them to Himself all together.

Say, "Shall I inform you of [what is] worse than that as penalty from Allah? [It is that of] those whom Allah has cursed and with whom He became angry and made of them apes and pigs and slaves of Taghut. Those are worse in position and further astray from the sound way."

They have certainly disbelieved who say, "Allah is the Messiah, the son of Mary" while the Messiah has said, "O Children of Israel, worship Allah, my Lord and your Lord." Indeed, he who associates others with Allah - Allah has forbidden him Paradise, and his refuge is the Fire. And there are not for the wrongdoers any helpers.

Say, "Do you worship besides Allah that which holds for you no [power of] harm or benefit while it is Allah who is the Hearing, the Knowing?"

I said not to them except what You commanded me - to worship Allah, my Lord and your Lord. And I was a witness over them as long as I was among them; but when You took me up, You were the Observer over them, and You are, over all things, Witness.

If You should punish them - indeed they are Your servants; but if You forgive them - indeed it is You who is the Exalted in Might, the Wise.

And He is the subjugator over His servants. And He is the Wise, the Acquainted [with all].

Say, "Indeed, I have been forbidden to worship those you invoke besides Allah." Say, "I will not follow your desires, for I would then have gone astray, and I would not be of the [rightly] guided."

And He is the subjugator over His servants, and He sends over you guardian-angels until, when death comes to one of you, Our messengers take him, and they do not fail [in their duties].

That is the guidance of Allah by which He guides whomever He wills of His servants. But if they had associated others with Allah, then worthless for them would be whatever they were doing.