Isaiah 30:25-26

On every lofty mountain and on every high hill there will be streams of water on the day of the great slaughter (the day of the LORD), when the towers fall [and all His enemies are destroyed]. The light of the full moon will be like the light of the sun, and the light of the sun will be seven times brighter, like the light of seven days [concentrated in one], in the day the LORD binds up the fracture of His people and heals the wound He has inflicted [because of their sins].