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)

238. Since angels' language corresponds to the affections of their love, and since heaven's love is love for the Lord and love for our neighbor (see above, 13-19), we can see how elegant and delightful their conversation is. It affects not only the ears but also the deeper levels of the minds of those who hear it. There was one particular hard-hearted spirit with whom an angel talked, and eventually he was so moved by what the angel was saying that he burst into tears, saying that he couldn't help it, love was talking, and he had never cried before.