'Servant' in the Bible

And when he came near unto the den to Daniel, he cried with a lamentable voice; the king spake and said to Daniel, O Daniel, servant of the living God, is thy God, whom thou servest continually, able to deliver thee from the lions?

Yea, all Israel have transgressed thy law, even turning aside, that they should not obey thy voice: therefore hath the curse been poured out upon us, and the oath that is written in the law of Moses the servant of God; for we have sinned against him.

Now therefore, O our God, hearken unto the prayer of thy servant, and to his supplications, and cause thy face to shine upon thy sanctuary that is desolate, for the Lord's sake.

For how can the servant of this my lord talk with this my lord? for as for me, straightway there remained no strength in me, neither was there breath left in me.