'Servant' in the Bible

So Mary said, "Yes, I am a servant of the Lord; let this happen to me according to your word." Then the angel departed from her.

because he has looked upon the humble state of his servant. For from now on all generations will call me blessed,

He has helped his servant Israel, remembering his mercy,

For he has raised up a horn of salvation for us in the house of his servant David,

"Now, according to your word, Sovereign Lord, permit your servant to depart in peace.

That is why I did not presume to come to you. Instead, say the word, and my servant must be healed.

That servant who knew his master's will but did not get ready or do what his master asked will receive a severe beating.

No servant can serve two masters, for either he will hate the one and love the other, or he will be devoted to the one and despise the other. You cannot serve God and money."