In Psalm 107:27, this signifies to fall into such error as results when only what can be grasped sensuously is believed; and as such people search into the mysteries of faith by means of sensuous things, whether of memory or of philosophy, material things constantly cling to the thought. (Arcana Coelestia 1972)

In Isaiah 24:20, this signifies to be insane in spiritual things due to falsifying the truths of the Word. (Arcana Coelestia 1072, Apocalypse Revealed 331)