Midrash su Ezechiele 42:16

Four quarters have been created in the world; the quarter facing the east, that facing the south, that facing the west and that facing the north. From the quarter facing the east the light goeth forth to the world. From the quarter facing south the dews of blessing and the rains of blessing go forth to the world. From the quarter facing west where are the treasuries of snow and the treasuries of hail, and thence come forth into the world cold and heat and rains. From the quarter facing north darkness goeth forth into the world. The quarter facing north He created, but He did not complete it, for He said, Anyone who says: I am a God, let him come and complete this quarter which I have left (incomplete) and all will know that he is a God.