Almost all the people who arrive in the other life are ignorant of the nature of heavenly bliss and happiness. This is because they do not know what inner joy is or what its quality is except on the basis of their grasp of physical and worldly good cheer and pleasure. Since they do not know about it they think it is not real, when in fact physical and earthly pleasures are nothing in comparison. So in order that they may know and recognize it, honest people who do not know what heavenly joy is are first taken to parks that surpass every image of their imagination. Just when they think that this is a heavenly paradise, they are told that this is not real heavenly happiness. So they are allowed to recognize deeper states of joy as these are perceptible to their deepest natures; and then they are transported into a state of peace that reaches their very inmost nature. They confess that no part of this can be expressed or even comprehended. Then they are taken into a state of innocence, again all the way to their own deepest feeling. In this way they are enabled to realize what real spiritual and heavenly goodness are.
from Heaven and Hell, Section 412