Just read, just the book of Genesis. With this thought in mind.

Most of the appearances appear concrete but some seem paranormal by the descriptions.

And by persons I mean The Lord and His Angels... Dozens of appearances in dreams especially, one or two apparitions like Moses and the bush.

And if these holy creatures are physical then how do all of these things remain consistent without direct mental projection and occasional teleportation.

It's really worth a read to think it through.

Now that I have read all of Jubilees and half of Jasher I should first read all Genesis, before continuing.

It will only take me the afternoon.