Let's look to archeology/anthropology to see which one came first, we can use the least cucked sources to do this. I'm betting on paganism because the evolution of religion goes from: animism (a spirit in everything, and spirits all around us) to shamanism (specialized human roles in establishing contact with spirits) to totemism (some spirits are more contacted than others, some spirits are higher and more powerful than others, and humans make covenants or worship with specific spirits) to polytheism (some spirits are set above the rest for worship, occupying a special role in the universe, etc. they become gods, and the gods are often in conflict with one another) to monolateralism (basically the covenant of worship with the some of the gods acquires the characteristic that they should be worshipped to the exclusion of other gods, that the worship of other gods must be abandoned) to monotheism (the outright denial of the existence of other gods, there is one god alone who is responsible for everything, other gods are transformed into servants of the one god, such as angels, or enemies of the god, such as demons, the various spirits are also integrated into this new framework) then comes the development of a variety of ideologies such as gnosticism (due to the paranoia of the god's enemy, and the insistence of the influence of the enemies of god having more influence on the world than the god themselves, the god becomes more distant, taking a backseat as his enemy comes to the forefront, the true god is behind the enemy, who assumes the role of a more deistic nature) deism (the enemy of the god is removed from the equation, leaving only a distant god, the god thus becomes less involved in the world, responsible for less phenomena, and requiring less worship, eventually becoming the "first mover" who sets up the universe than does nothing else) then pantheism (the god becomes synonymous with the universe, everything exists in the mind of god) and finally atheism (the god is now declared so irrelevant that he may as well not exist, there is also no longer any reason to believe, since all the phenomena that caused belief in gods was now better explained by scientific discovery, and the discoveries of science had also cast a lot of the essential assertions involved in religion to come into serious question, so people stop believing in god entirely) then comes times of hardship and regime change, in which religion is revived, but in a cynical fashion, where it's value is no longer seen in it's ability to explain anything, in fact, most advocates never mention whether it's true or not, as if they do not believe there's any fact to it, but instead they sell it solely on it's value in being a means of social engineering, the value is in how it modifies the minds and actions of the people who believe in it, it's never mentioned as granting them supernatural favors on earth, nor in the afterlife (such as saving their souls from hell), instead, the value is solely in this earth and comes exclusively from the effects belief has on the people who hold them. the natural evolution of this is the revision of the religion to best suit it's new purpose, since the sole value is social engineering, the proposals are to rewrite the holy books in order to better reflect the social and political purposes that the text is intended to serve, according to biblical archeology, this had happened many times in the course of the Bible's creation, as different deletions, additions, and alterations were made in order to serve political purposes as regimes changed places.