Up-to-date, detailed help for the Europa Universalis IV (EU4) command zeal. To start a religious rebellion within a state, you will need to change the religion of 75% of the provinces within the state to your desired religion. However, it is possible to do quickly with cheats by starting a religious rebellion.
In Europa Universalis IV, there is no simple way to change the religion of a state. If I were you unless you're a country like Spain (Castile) that can get massive.
It takes 30 years for religious zeal to wear off.
