'Serve' in the Bible

Elisha said, "As certainly as the Lord who rules over all lives (whom I serve), if I did not respect King Jehoshaphat of Judah, I would not pay attention to you or acknowledge you.

But Elisha replied, "As certainly as the Lord lives (whom I serve), I will take nothing from you." Naaman insisted that he take it, but he refused.

At the same time they worshiped the Lord. They appointed some of their own people to serve as priests in the shrines on the high places.

The Lord made an agreement with them and instructed them, "You must not worship other gods. Do not bow down to them, serve them, or offer sacrifices to them.