'Serve' in the Bible

Are they not all ministering spirits sent out to serve those who are going to inherit salvation?

For God is not unjust; He will not forget your work and the love you showed for His name when you served the saints—and you continue to serve them.

These serve as a copy and shadow of the heavenly things, as Moses was warned when he was about to complete the tabernacle. For God said, Be careful that you make everything according to the pattern that was shown to you on the mountain.

how much more will the blood of the Messiah, who through the eternal Spirit offered Himself without blemish to God, cleanse our consciences from dead works to serve the living God?

Therefore, since we are receiving a kingdom that cannot be shaken, let us hold on to grace. By it, we may serve God acceptably, with reverence and awe,

We have an altar from which those who serve the tabernacle do not have a right to eat.