Hear ye the words of this covenant, and speak unto the men of Judah, and to the inhabitants of Jerusalem;
This covenant - alluding to the book of the law (Deut. 27:28) found in the temple by Hilkiah the high priest, five years after Jeremiah's call to the prophetic office (2 Kings 22:8-20; 2 Kings 23:1-25).
Hear ye the words of this covenant, and speak unto the men of Judah. Others besides Jeremiah were to promulgate God's will to the people; it was the duty of the priests to read the law to them (Malachi 2:7).