Jeremiah 34:8-11

8The word that came to Jeremiah from Adonai, after King Zedekiah had made a covenant with all the people that were at Jerusalem, to proclaim liberty to them,

9so that everyone should let his manservant and his maidservant—Hebrew man or Hebrew woman—go free, so that no one should make a slave of a Jew, his brother.

10So all the princes and all the people obeyed, who had entered into the covenant, that everyone would free his manservant and his maidservant and not make them slaves any more—they obeyed, and freed them.

11But afterward they turned around and made the servants and the handmaids, whom they had let go free, return, and brought them back into subjection as servants and as handmaids.”