Only replying because this piqued my historical interest:

Aztecs had routine ritual wars where they'd go to war with client states or rival states in order to kidnap people for the purpose of their religious sacrifices. They'd capture such people alive so they could engage in routine murderous rituals in order to keep the sun coming up another day. It's one of the reasons the Spanish had such an easy time conquering the continent, because everyone was like "Oh, your Christian God doesn't ask for human sacrifices? I'm in."

Another good example would be the Assyrian Empire, which was famously brutal, based on their religious ideology which essentially made their king the instrument of the God of War and only doing their religious duty if they were brutally massacring outsiders -- not just defeating them, but being truly brutal such as forcing their enemies to grind the bones of their dead women and children and bragging about it on their carvings. In the end, the rest of Mesopotamia put their grudges aside for the sole purpose of wiping the Assyrians off the map. Some of the Assyrian actions would be considered genocide by the current definitions of such things, including mass killings. The destruction of Elam was absolutely brutal, and they relished their eradication of a people and their gods. While this is from the region from which Abrahamic religion would be codified, at this time they worshipped patron deities of particular cities and while the beginnings of that genealogy of faiths was starting to exist, it wasn't related to the Assyrians who were still engaged in the pre-axial age polytheistic fear-based religions.

One hypothesized reason for the total erase of the Minoan civilization during the bronze age collapse despite their advanced culture and large range of influence was that they practiced human sacrifices and the various tribes which were expected to provide human sacrifices as tribute. Under this hypothesis, when the various factors caused the collapse of the Minoan civilization, the people who fled from there refused to keep learning to read and write because those were tools for atrocity and so the only relic of the civilization was an ancient story of the golden fleece.

Two other examples would be ancient Egyptians who were already ancient at the time of the Assyrians, and the ancient Chinese (particularly the Shang dynasty), both of whom would bury entire retunes with their dead in the religious hopes that in the next life the powerful would have their servants.

As I understand it, ancient Hindu kings would also engage in ritualized warfare which would kill people.

Different religions had different purposes. Ancient religions were for dealing with the randomness and fear of a world ancient humanity had no tools to understand, and one of the ways of dealing with stress like that is trying to bargain with the primal powers of the world, sometimes by throwing a piece of meat to the tiger in the form of a human sacrifice.

Later religions tried something new, because the Axial age had a requirement that humans deal with routinely interacting with people beyond dunbar's number, but abrahamic religions would of course still have those fear-based attributes because a historical Abraham would have lived during that age of fear-based religions.

One final note about religions is that a religion without teeth dies, so some aspect of violence or sacrifice must remain. I like to use the example of Christianity in North Africa -- it was a soft and fluffy religion, and was wiped out by the spread of the Islamic caliphate as it spread from the Arabian Peninsula. Western Europe survived in part because it wasn't just soft and fluffy, it also had the strength of Nordic and Germanic warrior cultures and old pagan religions that are a bit spiky. Hindu religion had an incredibly powerful culture, but at its most decadent around the 9th century, India was conquered by the Muslims very successfully despite being outnumbered 100 to 1.