Jeremiah 51:47

Therefore, behold, the days come, that I will do judgment upon the graven images of Babylon: and her whole land shall be confounded, and all her slain shall fall in the midst of her.

Therefore, behold, the days come, that I will do judgment. Grotius translates [ laakeen (H3651)], 'Because then (namely, on the third year) the days shall have come that I will do judgment.'

Her whole land shall be confounded - at seeing their gods powerless to help them.

All her slain - in retribution for 'Israel's slain' (Jeremiah 51:49), who fell by her hand. Grotius translates [chªlaaleyhaa], 'all her dancers,' as in Judges 21:21; Judges 21:23; 1 Samuel 18:6, the same Hebrew word is translated, alluding to the dancing revelry of the festival during which Cyrus took Babylon.