Arcana Coelestia #1065
1065. That 'these three were the sons of Noah' means these three kinds of doctrines which Churches in general possess has been stated just above. There are indeed countless less universal types of doctrines, but no further universal types exist. People who do not acknowledge charity, or faith, or external worship, are not part of any Church and are not therefore included since the Church is the subject here.
Arcana Coelestia #4432
4432. 'The prince of the land' means which was first and foremost among the Churches. This is clear from the meaning of 'the prince' as that which is first and foremost, dealt with in 1482, 2089, and from the meaning of 'the land' as the Church, dealt with in 662, 1066, 1067, 1262, 1733, 1850, 2117, 2138, 2928, 3355, 3686, 3705.