Uncover and grind meal
'To uncover' signifies adulterating the goods of the Word, and 'to grind meal' signifies falsifying its truths.
(Odkazy: Apocalypse Revealed 794; Isaiah 47:2)
Arcana Coelestia # 8611
8611. 'And Aaron and Hur' means the levels of truth next in order. This is clear from the representation of 'Aaron and Hur' as the lower levels of truth next in order to the highest level, which is represented by 'Moses', dealt with above in 8603.