The speech of the celestial angels abounds in the vowels A (ah, as in father), and U (as u in rule). One may often determine from the Hebrew vowels in a passage which words belong to the class of celestials and which to the spirituals — i.e., whether they involve good or truth. The former use more frequently the sounds of O and U, for they have a full tone, and also occur oftener in the Third Heaven. (Heaven and Hell 241; True Christian Religion 278;, Spiritual Experiences 5112, 5620, 5787)

244. There is, as already noted, a single language for everyone in heaven; but it does vary, in that the language of wiser people is more profound and more full of shades of affections and specific concepts. The language of less wise individuals is less profound and not so full, and the language of simple people is still less profound, actually consisting of words that yield meaning only the way they do when we on earth talk with each other.

There is also a language of facial expressions that switch over to a sound modified by ideas, and a language in which images of heaven are combined with concepts and the concepts are presented visually. There is also a language of bodily movements responsive to affections and portraying the same things that their verbal expressions do. There is a language of shared affections and of shared thoughts; there is a thunderous language; and there are other languages as well.