Therefore am I to them like a lion; Like a leopard I will lurk by the path.
"Rend the caul of their heart ..." is a reference to the pericardium. God, once their friend, would become their enemy!  Keil, Harley and others have noted that the Hebrew verbs here indicate that the punishment of Israel had already begun and that it would not cease until a total end of the apostate nation occurred.