Make bright the arrows; gather the shields: the LORD hath raised up the spirit of the kings of the Medes: for his device is against Babylon, to destroy it; because it is the vengeance of the LORD, the vengeance of his temple.
Brighten your arrows and gather your shields. God has helped the kings of the Medes to attack Babylon and destroy it. This is God's plan for revenge against Babylon, avenging his temple.