There is a lot here to take in. Yet much is also clarified. Sun worship is actually a natural outcome of the practice of meditation and evolves toward sun gazing to support the body. To make this as real as possible, in my own practice, I have seen the impossibility of the inner sun just once but i did see it.
Thus spiritual yearning evolves into meditative practice and that reveals the inner sun and often reported mind to mind communion with masters who guide. This was the purported foundation of Atlantean global spiritual teaching. As posted that era ran optimally from 2500 BC through its general collapse in 1159 BC allowing for a global distribution.
An earlier focus could well remain lost to us but that is another matter. Gobekli Tepe is best understood through this spiritual lens and it is over ten thousand years old. . .