זוהר שמות — דף ח ע”ב

On that day, a flame of fire will arise in the great city of Rome and will burn many towers and palaces. At that great sound, kings and princes will be stirred. The secret of the nest: on that day the Messiah will reign from the end of the world and will be gathered into the land of Israel. The Holy One blessed be He will remember His covenant and arouse His Shekhina and redeem Israel. The miracle of the nest and sending away the mother are the secret of Israel's departure from exile.