First, there is this annoying little thing called the Constitution.  The courts have been pretty consistent - if you're going to allow any expression of religion in a government meeting you have to allow all religions.  Not just yours.

We've seen that with holiday displays (if you want to set up a Nativity scene on gov't property you have to allow displays reflecting other religions), the distribution of bibles and other "Christian" literature in schools (in Florida one group sued to be allowed to distribute Bibles in local high schools - they won but the court also ruled that if that was the case the Satanic Temple could distribute their material - funny but two days after the court issued that second ruling the school board announced that no-one could distribute stuff on school property).  And we've seen it with after school clubs - if Christian groups can run them then others have to be allowed the same privilege.