Jeremiah 34:9-14

9that every man should let his Hebrew slaves, male and female, go free, so that no one should make a slave of a Jew, his brother.

10So all the princes and all the people who had entered into the covenant agreed that everyone would let his male servant and his female servant go free, and that no one would keep them in bondage any longer; they obeyed, and set them free.

11But afterward they backed out [of the covenant] and made the male servants and the female servants whom they had set free return [to them], and brought the male servants and the female servants again into servitude.

12Therefore the word of the Lord came to Jeremiah from the Lord, saying,

13“Thus says the Lord, the God of Israel, ‘I made a covenant (solemn pledge) with your forefathers in the day that I brought them out of the land of Egypt, out of the house of bondage, saying,

14“At the end of seven years each of you shall set free his Hebrew brother who has sold himself [into servitude] or who has been sold to you and has served you six years, you shall release him from [serving] you; but your forefathers did not listen [submissively] to Me or obey Me.