Jeremiah 34:9–11

9 As a result, each was to let his male and female Hebrew slaves go free, and no one was to enslave his fellow Judean.j 10 All the officials and people who entered into covenant to let their male and female slaves go free—in order not to enslave them any longer—obeyed and let them go free. 11 Afterward, however, they changed their minds and took back their male and female slaves they had let go free and forced them to become slaves again.