This question is impossible to answer with much certainty. Archaeologists and anthropologists point to intentional and ritualized burial as one of the hallmarks of some sort of religious belief, because it suggests some degree of concern for the afterlife. The first demonstrably intentional burial site dates to about 90,000 years ago, and it is located in modern Israel. Some scholars have theorized that religious beliefs in some form may have existed even before 100,000 years ago. Some evidence of totemism, or religous symbolism, has been found in Neanderthal sites, and there are also suggestions of animal worship by Neanderthals as well. Whenever religious beliefs began, they almost certainly were animist in nature, meaning they tended to view spirits as immanent in nature rather than as anthropomorphic deities. The oldest anthropomorphic paintings and carvings, possible of religious items, date to around 35,000 years ago.
At Lascaux, God appears like a horse or a cow instead of a burning bush or a lightning bolt. Maybe not the first religion, but it might be the first cathedral.
idont if i am wright because i don't lnow the proper answer to this question. Hinduism, Judaism, Buddhism, Taoism, and Jainism are the very first relogion in the world