'Serve' in the Bible

Then Jesus told him, "Go away, Satan! Because it is written, "You must worship the Lord your God and serve only him.'"

"No one can serve two masters, because either he will hate one and love the other, or be loyal to one and despise the other. You cannot serve God and riches!"

That's the way it is with the Son of Man. He did not come to be served, but to serve and to give his life as a ransom for many people."