GOD is the light of the heavens and the earth. The allegory of His light is that of a concave mirror behind a lamp that is placed inside a glass container. The glass container is like a bright, pearl-like star. The fuel thereof is supplied from a blessed oil-producing tree, that is neither eastern, nor western. Its oil is almost self-radiating; needs no fire to ignite it. Light upon light. GOD guides to His light whoever wills (to be guided). GOD thus cites the parables for the people. GOD is fully aware of all things.