Jeremiah 34:7-9

Young's Literal Translation

⁷ and the forces of the king of Babylon are fighting against Jerusalem, and against all the cities of Judah that are left -- against Lachish, and against Azekah, for these have been left among the cities of Judah, cities of fortresses.

⁸ The word that hath been unto Jeremiah from Jehovah, after the making by the king Zedekiah of a covenant with all the people who [are] in Jerusalem, to proclaim to them liberty,

⁹ to send out each his man-servant, and each his maid-servant -- the Hebrew and the Hebrewess -- free, so as not to lay service on them, any on a Jew his brother;