To enable me to know what heaven and heavenly joy are and what their quality is, though, the Lord has allowed me to feel the pleasures of heavenly joy often and at length. Because this was living experience, I may indeed know about them, but there is no way to describe them. Still, something should be said in order to provide at least some notion about them. There is an effect of countless pleasures and joys that unite to present a single something, a unity or united affection that contains a harmony of countless affections that do not come through to consciousness individually, only vaguely, because the consciousness is so very general. It was still possible to perceive that there were countless elements within it, so beautifully arranged as to defy description. The qualities of those countless elements flow from the very design of heaven; and this kind of design is resident in the very least affections, affections that are manifest and perceived only as a very general unity, depending on the perceptive ability of the subject. In a word, there are infinite elements in a most intricate form in every general entity, and there is nothing that is not alive and does not affect everything even at the very center, since heavenly joys emanate from the very center.
I have also noticed that heavenly joy and delight seemed to be coming from my heart, spreading very subtly through all my inner fibers and from there into the gatherings of fibers with such a profound sense of pleasure that my fibers seemed to be nothing but joy and delight, and everything I perceived and felt was alive with bliss. Next to these joys, the joy of physical pleasures is like crude and irritating dust compared to a pure and gentle breeze.
I noticed that when I wanted to convey all my pleasure to someone else, a deeper and fuller pleasure flowed in ceaselessly in its place. The more I wanted to convey it, the more it flowed in; and I perceived that this was from the Lord.
from Heaven and Hell, Section 413