'Uz, Hul, Gether and Mash,' as in Genesis 10:23, signify several kinds of knowledges derived from the knowledges of good, and anything pertaining those knowledges. Knowledges derived from the knowledges of good are natural truths, and anything pertaining to knowledges are actions based on them.

(Odkazy: Arcana Coelestia 1234)

1219. That 'sons were born to Shem' here means that from the Ancient Church a new Church arose is clear from the contents of this verse, in which reference is made to Eber, by whom that new Ancient Church is meant, to be dealt with in what follows.