I'm not loving this "religious victory" thing. One of the AI's seems to be trying the same thing. My missionaries are a lot stronger than his (Evangelism) but it's still tedious. I guess I could kill him, but then no more open borders with anybody else. And a couple other AIs have their own religions that they are kinda pushing to nearby city states, so I have to keep reconverting those.
It was mostly to get ourselves out of the comfort zone. Try to choose Divine Inspiration and Itinerant Preachers. The AIs on Emperor will have little say in the religion game with that combo.