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.
Isaiah 24:3-6
3
The land shall be utterly emptied, and utterly spoiled: for the LORD hath spoken this word.
4
The earth mourneth and fadeth away, the world languisheth and fadeth away, the haughty people of the earth do languish.
5
The earth also is defiled under the inhabitants thereof; because they have transgressed the laws, changed the ordinance, broken the everlasting covenant.
6
Therefore hath the curse devoured the earth, and they that dwell therein are desolate: therefore the inhabitants of the earth are burned, and few men left.