'Serve' in the Bible

For God is my witness, whom I serve in my spirit in the Good News of his Son, how unceasingly I make mention of you always in my prayers,

But now we have been discharged from the law, having died to that in which we were held; so that we serve in newness of the spirit, and not in oldness of the letter.

I thank God through Jesus Christ, our Lord! So then with the mind, I myself serve God's law, but with the flesh, the sin's law.

it was said to her, "The elder will serve the younger."

Yes, it has been their good pleasure, and they are their debtors. For if the Gentiles have been made partakers of their spiritual things, they owe it to them also to serve them in fleshly things.

For those who are such don't serve our Lord, Jesus Christ, but their own belly; and by their smooth and flattering speech, they deceive the hearts of the innocent.