Make ye mention to the nations; behold, publish against Jerusalem, that watchers come from a far country, and give out their voice against the cities of Judah.
Make ye mention to the nations. The neighbouring foreign "nations" are summoned to witness Yahweh's judgments on His rebel people (Jeremiah 6:18-19).
Watchers - i:e., besiegers (cf. 2 Samuel 11:16, "Joab observed (the same Hebrew, watched, i:e., besieged) the city").
Give out their voice - their war-shout.