In Exodus 30:12, this signifies all things of the church. (Arcana Coelestia 10216)

177. THE GARMENTS WITH WHICH ANGELS APPEAR CLOTHED.

Since angels are men, and live among themselves as men do on the earth, they have garments and dwellings and other such things, with the difference, however, that as they are in a more perfect state all things with them are in greater perfection. For as angelic wisdom surpasses human wisdom to such a degree as to be called ineffable, so is it with all things that are perceived and seen by angels, inasmuch as all things perceived and seen by them correspond to their wisdom (see above, 173).