How do higher spiritual communications arrive?

Spiritual communications arriving from the higher spiritual zones reach you clairaudiently. 

Those from the lower spiritual zones reach you clairvoyantly. In other words, communications coming from the higher spiritual zones reach you, as though spoken to you, and those from the lower zones reach you, as symbols and pictures, which are made manifest to you through the spiritual sense of sight.

Benjamin F. Woodcox, Fragments of Spiritual Knowledge Pertaining to the Spiritual World, Woodcox & Fanner, Battle Creek, Michigan, 1923