'Servant girls' in the Bible

But later, they took back again the servants and the servant-girls whom they had let go free, and put them again under the yoke as servants and servant-girls.

But again you have put shame on my name, and you have taken back, every one his man-servant and his servant-girl, whom you had sent away free, and you have put them under the yoke again to be your servants and servant-girls.