Arcana Coelestia #1021
1021. That 'Noah and his sons with him' means the Ancient Church has been shown already and will be clear in subsequent parts of this chapter. Consequently there is no need to pause and confirm the point here.
Joel 2:1-2
1
Blow ye the trumpet in Zion, and sound an alarm in my holy mountain: let all the inhabitants of the land tremble: for the day of the LORD cometh, for it is nigh at hand;
2
A day of darkness and of gloominess, a day of clouds and of thick darkness, as the morning spread upon the mountains: a great people and a strong; there hath not been ever the like, neither shall be any more after it, even to the years of many generations.