'Maid servant' in the Bible

Now these [are] the generations of Ishmael, the son of Abraham, that Hagar the Egyptian, the maidservant of Sarah, bore to Abraham.

Turn to me and be gracious to me. Give your strength to your servant, and grant victory to the son of your maidservant.

Ah, Yahweh, I [am] indeed your servant; I am your servant, the child of your maidservant. You have loosed my bonds.