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.
Heap
'To heap together,' as mentioned in Genesis 41:49, denotes multiplying. 'A heap,' as mentioned in Genesis 31:40, signifies good, because in the past, before they built altars, the ancients made heaps and ate together upon them as a testimony that they were joined together in love.
(References: Arcana Coelestia 4102)