I'm going to refuse to participate in my family's religious practices despite working at a church
Why would you want to refuse their religion?
I'm unable to find clear enough arguments to base my beliefs on.
Sometimes families have different religious beliefs. That is okay as long as they respect them.
That is your opinion. Who appointed you the manager of all beliefs?
I'm not saying I'm the manager of all beliefs. I'm just saying that people should try and respect the religious beliefs of others.