God here speaketh, but whether personating other nations or the Jewish nation is not agreed, nor yet whether this text refers to the times of the Messiah, when the nations should tremble, or the time when Darius invaded Babylon, or the times of Gog and Magog, (of which read Eze 38) or the time when the Chaldeans invaded Judah: this last seemeth most probable, and that God by this intended only to rouse the Jews out of their security, and put them off from expecting peace according to the flatteries of the false prophets, assuring them that the times that were coming next were not times of peace, but such as should make them tremble.
Related Commentaries of Jeremiah 30:5
Jeremiah 30:5
5 For thus saith the LORD; We have heard a voice of trembling, of fear,a and not of peace.