'Servant' in the Bible

When he had come near the den to Daniel, he cried out with a troubled voice. The king spoke and said to Daniel, “Daniel, servant of the living God, has your God, whom you constantly serve, been able to deliver you from the lions?”

Indeed all Israel has transgressed Your law and turned aside, not obeying Your voice; so the curse has been poured out on us, along with the oath which is written in the law of Moses the servant of God, for we have sinned against Him.

So now, our God, listen to the prayer of Your servant and to his supplications, and for Your sake, O Lord, let Your face shine on Your desolate sanctuary.

For how can such a servant of my lord talk with such as my lord? As for me, there remains just now no strength in me, nor has any breath been left in me.”