Jeremiah 34:8

This is the word that came unto Jeremiah from the LORD, after that the king Zedekiah had made a covenant with all the people which were at Jerusalem, to proclaim liberty unto them;

This is the word that came unto Jeremiah. By the law a Hebrew, after having been held a bond-servant for six years, on the seventh was to be let go free (; ).

After that ... Zedekiah had made a covenant - with solemn ceremonial in the temple (; Jeremiah 34:18).

To proclaim liberty unto them - bond-servants ().