Albert Barnes Commentary Jeremiah 4:5

"Declare ye in Judah, and publish in Jerusalem; and say, Blow ye the trumpet in the land: cry aloud and say, Assemble yourselves, and let us go into the fortified cities." — Jeremiah 4:5 (ASV)

Rather, proclaim in Judah, and in Jerusalem, instruct them to hear, and say, Blow the trumpet throughout the land: cry aloud, and say, and so on. The prophecy begins with a loud alarm of war. The verse sets forth well, in its numerous commands, the excitement and confusion of such a time.