People who are to have perception in spiritual matters
must have a desire for truth based on goodness and will always
be longing to know truth. This sheds light in their intellect,
and when their intellect has been enlightened, they
are able to perceive something inwardly. People without
a desire for truth, on the other hand, know what truth they
know from the religious teachings they choose to believe
in, and from the fact that a priest, elder, or monk has
called it true.
—Secrets of Heaven 5937:3