8729. 'A difficult matter they will bring to Moses' means mediation and intercession. This is clear from the explanation above in 8705. Here it says that they will bring the matter to Moses, there however that Moses will bring matters to God; but both statements embody the same meaning.

A foreigner, as in Exodus 12:45, signifies one who does good from his own natural disposition alone.

(Izinkomba: Arcana Coelestia 8002)