In Genesis 1:2; 7:11, this signifies deeply rooted selfish desires and the falsities from them. (Arcana Coelestia 18, 756) The deeps mentioned in Psalms 148:7 signify the ultimate heavens, in which the spiritual-natural angels and divine truths are in abundance with the arcana of divine wisdom.

(Odkazy: Apocalypse Explained 538)