'Servant' in the Bible

So I, the Lord, affirm that I will send for all the peoples of the north and my servant, King Nebuchadnezzar of Babylon. I will bring them against this land and its inhabitants and all the nations that surround it. I will utterly destroy this land, its inhabitants, and all the nations that surround it and make them everlasting ruins. I will make them objects of horror and hissing scorn.

I have at this time placed all these nations of yours under the power of my servant, King Nebuchadnezzar of Babylon. I have even made all the wild animals subject to him.

could my covenant with my servant David and my covenant with the Levites ever be broken. So David will by all means always have a descendant to occupy his throne as king and the Levites will by all means always have priests who will minister before me.

I will make the children who follow one another in the line of my servant David very numerous. I will also make the Levites who minister before me very numerous. I will make them all as numerous as the stars in the sky and as the sands which are on the seashore.'"

Just as surely as I have done this, so surely will I never reject the descendants of Jacob. Nor will I ever refuse to choose one of my servant David's descendants to rule over the descendants of Abraham, Isaac, and Jacob. Indeed, I will restore them and show mercy to them."

Then tell them, 'The Lord God of Israel who rules over all says, "I will bring my servant King Nebuchadnezzar of Babylon. I will set his throne over these stones which I have buried. He will pitch his royal tent over them.

I, the Lord, tell you not to be afraid, you descendants of Jacob, my servant, for I am with you. Though I completely destroy all the nations where I scatter you, I will not completely destroy you. I will indeed discipline you but only in due measure. I will not allow you to go entirely unpunished."