'Serves' in the Bible

“If your fellow Israelite, a Hebrew man or woman, is sold to you, and serves you for six years, then in the seventh year you shall set him free [from your service].

But the nation which will bow its neck under the yoke of the king of Babylon and serve him, that nation I will let remain on its own land,” says the Lord, “to cultivate it and live in it.”’”

“They will be Mine,” says the Lord of hosts, “on that day when I publicly recognize them and openly declare them to be My own possession [that is, My very special treasure]. And I will have compassion on them and spare them as a man spares his own son who serves him.”

Then you will again distinguish between the righteous and the wicked, between the one who serves God and the one who does not serve Him.