Leviticus 25:40

“If you buy a Hebrew slave, he shall serve for six years; but on the seventh he shall go out as a free man without payment.

“If your brother, a Hebrew man or woman, is sold to you, then he shall serve you six years, but in the seventh year you shall let him go to be free from you.

“You shall not oppress a hired person who is afflicted and needy, whether he is one of your brothers or one of your sojourners who is in your land within your gates.

Now a certain woman of the wives of the sons of the prophets cried out to Elisha, “Your servant my husband is dead, and you know that your servant feared Yahweh; and the creditor has come to take my two children to be his slaves.”

The word which came to Jeremiah from Yahweh after King Zedekiah had cut a covenant with all the people who were in Jerusalem to proclaim release to them: