Jeremiah 6:18

Therefore hear, ye nations... — The obstinate refusal with which the people met the summons of the prophet leads him once more to a solemn appeal (1) to the heathen nations, then (2) to the “congregation” of Israel (as in Exodus and Numbers passim), or, possibly, of mankind collectively, (3) to earth as the witness of the judgments of Jehovah.

What is among them. — Better, what comes to pass for them, i.e., for the sinful people.