'Serve' in the Bible

All of them are spirits on a divine mission, sent to serve those who are about to inherit salvation, aren't they?

They serve in a sanctuary that is a copy, a shadow of the heavenly one. This is why Moses was warned when he was about to build the tent: "See to it that you make everything according to the pattern that was shown you on the mountain."

how much more will the blood of the Messiah, who through the eternal Spirit offered himself unblemished to God, cleanse our consciences from dead actions so that we may serve the living God!

We have an altar, and those who serve in the tent have no right to eat at it.