Yeremia 34 : 16 Jeremiah chapter 34 verse 16

lakini mlighairi, na kulitukana jina langu; kila mtu akamrudisha mtumwa wake na mjakazi wake, ambao mmewaweka huru kama walivyopenda wenyewe, mkawatia utumwani tena, wawe watumwa wenu na wajakazi wenu.
soma Mlango wa 34

but you turned and profaned my name, and caused every man his servant, and every man his handmaid, whom you had let go free at their pleasure, to return; and you brought them into subjection, to be to you for servants and for handmaids.