Enoch - Then Raphael answered, one of the holy angels who was with me, and said unto me: 'These hollow places have been created for this very purpose, that the spirits of the souls of the dead should assemble therein, yea that all the souls of the children of men should assemble here. And these places have been made to receive them till the day of their judgement and till their appointed period ⌈till the period appointed⌉, till the great judgement (comes) upon them.'
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Notes

The book of Enoch is not part of the canonical scriptures (The Bible) we know today and we don't know how accurate it is.

Some belive while Enoch is not inspired by God that it still serves as a historical book on the time before the flood. It's also quoted in the New Testament in Jude 1:14-15.

Because of this I wanted to include this book for historical reasons.

I would recommend reading the Bible first and foremost as it should be your foundation. Then if you are intrested you can take a look at the book of Enoch.