Jeremiah 34:7-9

21st Century King James Version

⁷ when the king of Babylon’s army fought against Jerusalem and against all the cities of Judah that were left, against Lachish and against Azekah; for these fortified cities remained of the cities of Judah.

⁸ This is the word that came unto Jeremiah from the Lord, after King Zedekiah had made a covenant with all the people who were at Jerusalem to proclaim liberty unto them:

⁹ that every man should let his manservant and every man his maidservant, being a Hebrew or a Hebrewess, go free, that none should be served by them, to wit: by a Jew, his brother.