Arcana Coelestia #61
61. Everything that has to do with cognitions of faith is called spiritual, and everything that has to do with love to the Lord and towards the neighbour is called celestial. The former belong to man's understanding, the latter to his will.
Uncover and grind meal
'To uncover' signifies adulterating the goods of the Word, and 'to grind meal' signifies falsifying its truths.
(References: Apocalypse Revealed 794; Isaiah 47:2)