Religion in fiction

I’m debating whether or not to keep religion in Prisoner of the Molepeople. To me religion is such a fascinating subject, and especially when matters of life and death come up, it’s almost a mandatory subject. At the same time my style is farcical and light-hearted, and when throwing in deep, serious, religious moments into the midst of such a story, the two generally don’t mix. Yet I’m not satisfied with just silly. On the other hand, I’m  not satisfied with just serious. My quest is to make the two work together. We’ll see if it works or if I’m shooting myself in the foot.