

/cdn.vox-cdn.com/uploads/chorus_asset/file/19968154/matilda_close.jpg)
The religion of a character in Crusader Kings 2 can, like the religion of a province, also be changed very easily.

An easy way to access to the debug window is to right-click Crusader Kings 3 in your Steam library and then > Properties > Set Launch Options > General > enter-debug_mode in the Pop Up Window. There will be a couple of guards in a throne room that resembles the one in King's Landing.
