At times evil spirits have conjectured that some heaven other than the Lord’s could exist. They have received permission to look for it wherever they could. To their own chagrin, they have never been able to locate one.
Evil spirits rush headlong into all kinds of craziness, both because they hate the Lord and because hell is so painful, and these are the kinds of fantasies they seize on.
There are three heavens. The first is where good spirits are, the second where angelic spirits are, and the third where actual angels are.
Spirits, angelic spirits, and angels are each as a group divided up into heavenly and spiritual types. The heavenly ones are those whom love has led to receive faith from the Lord, as those who were part of the earliest church did. The spiritual ones are those whom religious knowledge has led to receive a feeling of charity from the Lord and then to act on it.
from Secrets of Heaven, Volume 1, Sections 458, 459