When Abraham saw the sun issuing in the morning from the east, he was first moved to think that that was God, and said, "This is the King that created me," and worshipped it the whole day. In the evening when the sun went down and the moon commenced to shine, he said, "Verily this rules over the orb which I worshipped the whole day, since the latter is darkened before it and does not shine any more." So he served the moon all that night. In the morning when he saw the darkness depart and the east grow light, he said, "Of a surety there is a King who rules over all these orbs and orders them."

(The Zohar)