At the outset, let me state that this is an exploration and not propounding any specific premise. Neither is this Ancient Wisdom series an academic or unquestionably accurate series of articles. These articles ARE reasonable for consideration, pondering, and meditation.
With this in mind let’s start at the beginning. I asked our modern AI “what is the oldest faith in the world?” It pointed me to Hinduism with “written texts dating back some 3,000 years”, according to Britannica.com. Yet when I asked “How long have modern humans been on the earth?” The response is “Homo sapiens have been on Earth for approximately 300,000 years.” It further notes that complex tool use and “behavioral modernity” emerged between 50,000 and 65,000 years ago.
So then, what was the faith of humanity for the 45,000-plus years before the first written texts concerning faith were generated. We may never be certain, but in the DSU article Insights to Humanity’s “Nature Religions” we may gain some insights. The genetic history of the people reported in this article extends back some 40,000 years. For the details, I recommend the article linked above, but allow me to summarize what I believe some of the earliest human faiths incorporated.