'Serving' in the Bible

This shall be the service of the families of the Gershonites, in serving, and in carrying:

Let it not seem hard unto thee, when thou sendest him away free from thee; for double the worth of a hired servant hath he been to thee, in serving thee six years; and Jehovah thy God will bless thee in all that thou doest.

But whenever the judge died, they turned back and behaved worse than their fathers, going after other gods, serving them and bowing down to them; they did not drop any of their practices or their stubborn ways.

And the people of Israel did what was evil in the sight of the LORD, forgetting the LORD their God, and serving the Ba'als and the Ashe'roth.

And that which cometh into your mind shall not be at all, that ye say, We will be as the nations, as the families of the countries, in serving wood and stone.