Cities
Cities of the mountain and cities of the plain (Jeremiah 33:13) signify doctrines of charity and faith.
(References: Arcana Coelestia 2418)
Numbers 16:41-42
41
But on the next day all the congregation of the children of Israel murmured against Moses and against Aaron, saying, "You have killed Yahweh's people!"
42
It happened, when the congregation was assembled against Moses and against Aaron, that they looked toward the Tent of Meeting: and behold, the cloud covered it, and the glory of Yahweh appeared.