Arcana Coelestia #667
667. 'He was to enter into the ark, he and his sons, and his wife, and his sons' wives' means that he would be saved. This is clear from what has been stated already, and from what follows, to the effect that he was saved because he had been regenerated.
Jeremiah 31:31-33
31
Behold, the days come, says Yahweh, that I will make a new covenant with the house of Israel, and with the house of Judah:
32
not according to the covenant that I made with their fathers in the day that I took them by the hand to bring them out of the land of Egypt; which my covenant they broke, although I was a husband to them, says Yahweh.
33
But this is the covenant that I will make with the house of Israel after those days, says Yahweh: I will put my law in their inward parts, and in their heart will I write it; and I will be their God, and they shall be my people:
