The god of my world is malevolent. He loves manipulating people, destroying cities, and causing tragedies all around the globe. He thinks this is the best way to govern humans, and nothing can convince him otherwise. If the world could get rid of him, it would solve all problems. History would enter a period of peace and prosperity for millennia to come.
But the people can't realistically win a war against this god.
As an almighty being, his strength and intelligence far surpass that of humans. Not only is he cunning, but he is also very cautious and has many powerful subordinates under his service. Thus, winning by force is out of consideration. The people could try to intimidate him into leaving the world, but it would hardly have a chance to work. As for assassination, this god can die, but he's pretty much immune to poison, and it would take quite a lot of effort to even leave a scratch upon his body.
In this situation, how can humans end the world domination of the evil God?