Established Religion

Background
When humans were first created it took them a while to discover religion and when they did the gods they created were peaceful and beneficial to them. But when a tribe was attacked by another and lost badly, sometimes its residents would create a 'revenge god'. These gods would use their powers to attack the other tribe. Sometimes they would do so in moderation, ensuring that just retribution was done; but sometimes they would attempt to drive the aggressor to destruction and others they would intimidate the aggressor into worshiping them and repeat that with the next tribe and then the next.

These gods came together into groups to share their experience, and developed three main strategies, to target leaders, to target preachers, and to target communities. The leader strategy would start by promising the leader help in keeping the people in line. If that failed, it would seek out a potential successor that would be more amenable to its aims and ensure that they became the next leader. If that too didn't work they would start to attack the leader. Those who targeted preachers did so in much the same way.

Those who attacked leaders became known as The Grim while those who bullied preachers became The Osirey and those who picked on communities as a whole dubbed themselves Eternity. Meanwhile good gods began to amalgamate across tribes in part to counter this and in part to pool power.

121 BA

The Grim was actually the least affected, as having found that they couldn't win, they had adopted a damage limitation strategy, protecting their leaders and ensuring that they had a few backups in the new power structure unknown to the good gods. They did loose almost all of their worshippers, but that was never the goal for The Grim, it was to maintain power and that they pretty much kept. Indeed many leaders when thinking about The Grim remember that during 121 they protected their own.

The Osirey were second, their structure actually had the vast majority of people believe that they were good which took a lot of persuading to dispel, and a few people who knew they were evil and were happy with that. Many lesser known outposts remained completely unscathed. Eternity just disintegrated. With the community never actually believing they were good, and no one benefitting from them, people were all to happy to give up worship. The gods that made up Eternity did all they could to keep a few worshippers and many of them were driven to adopt tactics of actually supporting the communities that worshipped them, at least for a while.