Albert Barnes Commentary Jeremiah 21:11

"And touching the house of the king of Judah, hear ye the word of Jehovah:" — Jeremiah 21:11 (ASV)

Rather, and regarding the royal house of Judah, Hear ye. Omit 'say'. These words are not a command to the prophet, but form his introduction to the discourse that extends to the end of Jeremiah 23:8. The king and his officers are to hear the gist of all the messages sent to the royal house since the accession of Jehoiakim.