What does Jeremiah 32:3 mean?

King Zedekiah had put Jeremiah there because Jeremiah kept telling him, 'This is what the Lord says: I’m about to hand this city over to the king of Babylon, and he’s going to capture it.' Jeremiah 32:3 - Modern Text Bible

(Jeremiah’s message of coming defeat angered the king, so he was locked up for speaking the truth.)