'Serve' in the Bible

"If ever you or any of your descendants turn from [following] me and do not keep my commandments [and] my ordinances that I have set before you and you go and serve other gods and bow down to them,

"Your father made our yoke heavy; now lighten the hard labor of your father and the heavy yoke which he placed on us, and we will serve you."

They said to him, "If you will be a servant today to this people, then you will serve them; and if you answer them and speak good words to them, they will always be your servants."