The trumpet — The Lord being now about to bring enemies upon them, speaks in martial language, warning them of the nature of their approaching judgment.
Related Commentaries of Jeremiah 4:5
Jeremiah 4:5
5 Declare ye in Judah, and publish in Jerusalem; and say, Blow ye the trumpet in the land: cry, gather together, and say, Assemble yourselves, and let us go into the defenced cities.