'Service' in the Bible

For God, whom I serve with my spirit by preaching the gospel of His Son, is my witness as to how continuously I mention you

Therefore I urge you, brothers and sisters, by the mercies of God, to present your bodies [dedicating all of yourselves, set apart] as a living sacrifice, holy and well-pleasing to God, which is your rational (logical, intelligent) act of worship.

if service, in the act of serving; or he who teaches, in the act of teaching;

For this same reason you pay taxes, for civil authorities are God’s servants, devoting themselves to governance.

to be a minister of Christ Jesus to the Gentiles. I minister as a priest the gospel of God, in order that my offering of the Gentiles may become acceptable [to Him], sanctified [made holy and set apart for His purpose] by the Holy Spirit.

They were pleased to do it, and they are indebted to them. For if the Gentiles have come to share in their spiritual things, then they are indebted to serve them also in [tangible] material things.