Jeremias 34:10

10 So all the officials and people who entered into this covenant agreed that they would free their male and female slaves and no longer hold them in bondage. They agreed, and set them free.

10 And all the princes and all the people obeyed, that had entered into the covenant, that every one should let his man-servant, and every one his maid-servant, go free, that none should make bondmen of them any more; they obeyed, and let them go: