That's the whole point- it's at church. In that sort of environment, everyone there is probably there willingly and has signed up to be involved with that sort of thing. And that's great- for a religious environment. Cheer, in general, is a completely different scenario, and unless your gym is advertised as a religiously themed business, then it creates the potential to be incredibly exclusionary to a select minority, which is hardly what you look for in a team.
I'm interested to see if you would have the same respect for other people's religions if they consistently tried to "convert" you. They, like you, probably have the best of intentions, and are so happy with their personal faith that they want you to experience the same joy that they have. So, when you mix a bunch of people together with a bunch of different faiths, I'm sure you can see how someone might get irritated pretty easily, even if they all do it just "because they care about you".
I really do think it's awesome that you're happy with your religion, and I understand why you would want to share your feelings with everyone. But I also think it's important for you to consider that there are tons of people, myself included, that are also completely happy with a different religion, or no religion altogether. I don't expect you or anyone to hide their faith, but I do think it's disrespectful, and a little naive, to act as if people can only be happy and fulfilled if they live in accordance with your worldview. I used to be quite religious myself, and a lot of my friends still are, yet we've all mutually decided that it's better for everyone involved to not try to "preach" to anyone about our religious beliefs unless such discussion is actually relevant to the conversation that's going on, or if someone specifically asks us how we feel about our beliefs. I just don't particularly think that cheerleading is an example of such a relevant situation.