Jeremiah 34:10-13 English Standard Version (ESV)

10. And they obeyed, all the officials and all the people who had entered into the covenant that everyone would set free his slave, male or female, so that they would not be enslaved again. They obeyed and set them free.

11. But afterward they turned around and took back the male and female slaves they had set free, and brought them into subjection as slaves.

12. The word of the Lord came to Jeremiah from the Lord:

13. “Thus says the Lord, the God of Israel: I myself made a covenant with your fathers when I brought them out of the land of Egypt, out of the house of slavery, saying,

Jeremiah 34