Jeremiah 34:10

34:10 All the people and their leaders had agreed to this. They had agreed to free their male and female slaves and not keep them enslaved any longer. They originally complied with the covenant and freed them.

Jeremiah 34:16

34:16 But then you turned right around and showed that you did not honor me. Each of you took back your male and female slaves whom you had freed as they desired, and you forced them to be your slaves again.