'Treasuries' denote knowledge of good and truth, and, in the opposite sense, evil and falsity.

(References: Arcana Coelestia 6660)

6660. 'To afflict them with burdens' means increasing distress caused by forms of hard service. This is clear from the meaning of 'afflicting' as increasing distress; and from the meaning of 'burdens', which were the tributes, as forms of hard service.