Great lights, as in luminaries, signify love and faith, and are called in Genesis 1:14-17 the sun, moon, and stars.

(References: Arcana Coelestia 31 [1-3])

The face of the deep (Genesis 1:2) signifies the lust of the unregenerate man, and the falsities that originate from it.

(References: Arcana Coelestia 018, Genesis 1)