'Servant' in the Bible

And when he came near unto the den, he cried with a mournful voice unto Daniel: the king spoke and said unto Daniel, O Daniel, servant of the living God, hath thy God whom thou servest continually been able to save thee from the lions?

And all Israel have transgressed thy law, even turning aside so as not to listen unto thy voice. And the curse hath 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.

And now, our God, hearken to 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.

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