Yahweh has accomplished his wrath, he has poured out his fierce anger; He has kindled a fire in Zion, which has devoured the foundations of it.
"The anger of Jehovah hath scattered them"  (Lamentations 4:16a).  There was no denial of the truth that the humiliation of Jerusalem came as a direct result of God's anger.  The near-universal immorality and wickedness of the people had finally overflowed against God's will beyond the point of 'no return.' No other explanation was possible.