'Serve' in the Bible

Then Jesus said to him, “Go away, Satan! For it is written and forever remains written, ‘You shall worship the Lord your God, and serve Him only.’”

“No one can serve two masters; for either he will hate the one and love the other, or he will be devoted to the one and despise the other. You cannot serve God and mammon [money, possessions, fame, status, or whatever is valued more than the Lord].

just as the Son of Man did not come to be served, but to serve, and to give His life as a ransom for many [paying the price to set them free from the penalty of sin].”