In the ancient and Jewish churches, 'songs' were prophesies about the Lord, especially His coming in the world, subjugation of evil spirits, and liberation of the faithful from their assaults. 'Heavenly songs' are voiced affections or affections expressed and modified by sounds. As thoughts are expressed by conversation, so affections are expressed by songs. From the balance and flow of the variations, angels perceive the object of the affection.

(Referenser: Conjugial Love 55)

144. As to 'calling by name' meaning recognizing their nature, it must be realized that the ancients understood nothing else by 'a name than the essential nature of a real thing, and by 'seeing and calling them by name' recognizing the nature of such. This was why they gave their sons and daughters names in keeping with the things that were meant by them; for there was something unique to every name, as a means of knowing the origin and nature of those children, as will also be seen later on where, in the Lord's Divine mercy, the twelve sons of Jacob are dealt with. Since therefore a name embodied a person's origin and nature nothing else was meant by 'calling by name'. This manner of speaking was customary among them; but anyone who does not understand is sure to wonder whether they do have these meanings.