We are being political and not theological here, and even for theologians there is a big difference between tolerating a religion and approving of it.
When the laws of a state have thought it best to allow multiple religions, they must also oblige them to tolerate each other. It is a principle that every religion which is repressed itself becomes repressive : for as soon as it can by some happenstance come out from under oppression, it attacks the religion which has repressed it, not as a religion but as a tyranny.
Therefore the laws must require of these various religions not only that they not disturb the state, but also that they not disturb each other. A citizen does not satisfy the laws by being content not to stir up the body of the state ; he must also avoid disturbing any citizen at all.