The third state of a man after death is a state of instruction. This
is a state in the experience of those who enter heaven and become
angels.
Instruction in heaven differs from instruction on earth, in that
knowledge is not committed to memory, but to life; for the memory of
spirits is in their life, inasmuch as they receive and become imbued
with everything that agrees with their life, and they do not receive,
still less do they become imbued with, anything that disagrees with
it; for spirits are affections, and are in a human form like their
affections. Being such, they have inspired in them continually an
affection for truth for the sake of the uses of life; for the Lord
provides that every one may love the uses which suit his genius, a
love that is exalted, too, by the hope of becoming an angel.... With
every one, therefore, the affection of truth is united to the
affection of use, so fully that they act as one. Thereby truth is
planted in service, so much so that the truths which angelic spirits
learn, are truths of use. Thus are they instructed and prepared for
heaven.
--_Heaven and Hell, nn._ 512, 517