Thank you for illustrating these sources. That is very helpful. And that thread is particularly awesome.
I have tried to stay away from the book of veles, because I have heard that it was a hoax. But the jav, nav and prav keep coming up. In prayers and songs and other attempts to follow ancetral beliefs.
Was the concept of these three worlds invented in the book of veles? Or did this concept already exist in slavic folklore?
And if they are only from a source that is a known forgery, then why do people continue to use them in their attempts to reconnect with the old beliefs?