Arcana Coelestia #1235
1235. Verse 24 And Arpachshad begot Shelah, and Shelah begot Eber.
'Arpachshad' was a nation so named which means knowledge. 'Shelah' likewise was a nation so named which means that which is the product of such knowledge. 'Eber' means a nation as well, whose father was thus named Eber, and by whom was meant the second Ancient Church which was separate from the previous Church.
