It is not cognitive bias, my friend, it is scholarly analysis of the texts in context of history and the culture of their times. This is just a sample of scholarly analysis. Also, I did not say 10,000 religions are all related, just the few which existed at the same time when the mysteries of Christianity were written anew for a new generation. The Gospel stories are the same myth written over and over and over and over: a god-man walks the earth and serves as an intermediary between man and the gods or supreme God in heaven. The Egyptians saw the Pharaoh in that role for well over a thousand years. Osiris' body was hung on a tree before his wife resurrected it. Furthermore, Osiris was according to the myth the first god-man Pharaoh of Egypt. There is a whole branch of Christianity, namely, Theosophists, who look for the common thread running through the great religions of our world.I'm sorry but this is clearly cognitive bias - you are seeing the tiny things that may correlate with Christianity and ignoring the mountain of beliefs that contradict it. You cannot read about Zeus, Osiris, Buddha, Huitzilopochtli, Odin, Jupiter, Ahura Mazda and The Coyote Spirit and possibly conclude they align with Christianity.
Cognitive bias is very well understood. It is when you favor information that conforms to your existing beliefs and discounting evidence that does not conform.
May I suggest that if you think the story of Brahma creating the world from the Great Serpent is the same as The Garden of Eden or that the Hindu concept of reincarnation is the same as going to Heaven then you clearly have some cognitive bias. They are just not the same - not even close.
It also seems very hard to believe that there is only the story of God but 10,000 religions saw it and somehow got it all fantastically wrong. It seems much more likely that all religious stories are fabricated by the people that developed them.
Hermes the Egyptian, Section 2
Alexandro-Egyptian Hellenism & Hermetism
by Wim van den Dungen
We know that numerous sects and schools arose from the Alexandrian mixture during the Graeco-Roman rules. The most important individual in the development of the Hebrew qabalah, resulting from a merger of Hebrew mysticism, Platonism and Pythagorism, was Philo Judaeus (ca.30 BCE - 45 CE). Philo of Alexandria was the leader of a large Jewish community at Alexandria and he was the first to apply Greek traditions to Hebrew scriptures. He hardly knew Hebrew and considered the Greek Septuagint as of Divine inspiration. He was acquainted with arithmology, attibuting numers to letters to gain access to a deeper level of meaning (cf. gematria). This isopsephy was used to interprete the Torah and gematria first appears in the rabbinic literature of the second century CE.
Parts of the teachings of Alexandrian Hermetism got incorporated in the Christian theologies of Paul, John and the monastics (cf. the Nag Hammadi cache). The latter contemplative branch of the Roman Church stretched out from Egypt (4th century) to Ireland (9th century) and influenced the Cistercian movement and its mystics. The qabalah was directly influenced by Greek number symbolism and Alexandrian astral science. Lastly, via Harran, Hermetism was placed on the sacred map of Islam.
>> "The mystical powers of Hermes exerted themselves far beyond the pagan world of late antiquity, transmuting medieval Christian and Islamic understanding of the relationship between rational knowledge and revelation."
Green, 1992, p.85.
By the way, YHWH is seen creating the world while battling the great serpent, then feeding the serpent's body to the creatures on the earth. Maybe there is a common thread to be found between Brahma and YHWH. I know very little of Asian religions but maybe someday when I have time I will investigate what they believe... It is interesting that the Lord's body is fed to us in the sacrament just as the serpent's body is fed to the creatures of the wilderness...body...matter...serpent...Son...sustenance. See, my mind has already started making those connections. Ha ha!
Yet God (Elohim) my King is from of old,
working salvation in the midst of the earth.
You divided the sea by your might;
you broke the heads of the sea monsters on the waters.
You crushed the heads of Leviathan;
you gave him as food for the creatures of the wilderness.
You split open springs and brooks;
you dried up ever-flowing streams.
Yours is the day, yours also the night;
you have established the heavenly lights and the sun.
You have fixed all the boundaries of the earth;
you have made summer and winter (Psa 74:12–17).