'Handmaidens' in the Bible

Then the handmaidens came near, they and their children, and they bowed themselves.

Then she said, Let me find favour in thy sight, my lord; for that thou hast comforted me, and for that thou hast spoken friendly unto thine handmaid, though I be not like unto one of thine handmaidens.

And on my servants and on my handmaidens I will pour out in those days of my Spirit; and they shall prophesy: