'Maid servant' in the Bible

Return to me and have mercy on me; clothe your servant with your strength and deliver the son of your maid servant.

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

Lo, as eyes of men-servants Are unto the hand of their masters, As eyes of a maid-servant Are unto the hand of her mistress, So are our eyes unto Jehovah our God, Till that He doth favour us.