Jeremiah 34:9-14

Everyone was to free their Hebrew slaves, men and women, and no longer enslave a fellow Jew. All the leaders and all the people made an agreement that everyone should free their slaves, men or women, and no longer keep them enslaved, so they set every slave free. But afterward, they went back on their word and forced the men and women whom they had set free back into slavery. Then YAHWEH spoke to Jeremiah, saying, “I, YAHWEH, God of Israel, made a covenant with your ancestors when I led them out of the house of bondage in Egypt. I said that every seventh year, each one of you is to free any fellow Hebrews who have sold themselves to you. They may be your slave for six years, then you must give them their freedom. Your ancestors, however, did not listen to me and would not obey.