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וַיֹּאמֶר אֱלֹהִים אֶל־נֹחַ וְאֶל־בָּנָיו אִתֹּו לֵאמֹר׃
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.
Matthew 22:35-40
35
One of them, a lawyer, asked him a question, testing him.
36
"Teacher, which is the greatest commandment in the law?"
37
Jesus said to him, "'You shall love the Lord your God with all your heart, with all your soul, and with all your mind.'
38
This is the first and great commandment.
39
A second likewise is this, 'You shall love your neighbor as yourself.'
40
The whole law and the prophets depend on these two commandments."
