Yahweh has done that which he purposed; he has fulfilled his word that he commanded in the days of old; He has thrown down, and has not pitied: He has caused the enemy to rejoice over you; he has exalted the horn of your adversaries.
God was faithful to His warnings. He had told them if they did not turn from their wickedness, if they did not turn from their idolatry, that He was going to bring their enemies against them and they would be destroyed. God has done that which He had purposed.