AC 3870 - the progress of regeneration from external to internal

AC 3870
... the subject treated of is the progress of a person's regeneration
from external to internal;
that is, from the truth of faith to the good of charity.
The truth of faith is external, and the good of charity is internal.
In order that the truth of faith may live,
it must be introduced into the will,
that it may there receive life;
for truth does not live from knowing, but from willing.

Life flows in from the Lord through the new willing
that He creates in a person.
The first life manifests itself by obedience,
which is the first of the will;
the second by the affection of doing the truth,
which is the progression of the will,
and which exists when delight and bliss
are perceived in doing the truth.
Unless there takes place such a progress of faith,
truth does not become truth.