'Servant' in the Bible

I am going to send for all the families of the north’—this is the Lord’s declaration—‘and send for My servant Nebuchadnezzar king of Babylon, and I will bring them against this land, against its residents, and against all these surrounding nations, and I will completely destroy them and make them a desolation, a derision, and ruins forever.

So now I have placed all these lands under the authority of My servant Nebuchadnezzar, king of Babylon. I have even given him the wild animals to serve him.

then also My covenant with My servant David may be broken so that he will not have a son reigning on his throne, and the Levitical priests will not be My ministers.

The hosts of heaven cannot be counted; the sand of the sea cannot be measured. So, too, I will make the descendants of My servant David and the Levites who minister to Me innumerable.”

then I might also reject the seed of Jacob and of My servant David—not taking from his descendants rulers over the descendants of Abraham, Isaac, and Jacob. Instead, I will restore their fortunes and have compassion on them.”

and tell them: This is what the Lord of Hosts, the God of Israel, says: I will send for My servant Nebuchadnezzar king of Babylon, and I will place his throne on these stones that I have embedded, and he will pitch his pavilion over them.

But you, My servant Jacob, do not be afraid,and do not be discouraged, Israel,for without fail I will save you from far awayand your descendants, from the land of their captivity!Jacob will return and have calm and quietwith no one to frighten him.