In this situation, let's say that they want to go the full nine yards. They already believe in their chosen deity, but they now want to engage in prayer or a similar practice, read religious texts, go to church or another house of worship, own paraphernalia of their religion, and...they want to do it all.

Would you be supportive? Would you have restrictions on your support (for example, they can believe whatever they want, but you won't allow them to pray around you or take them to church/a house of worship)?

Or would you be disappointed in them? Think it's just a phase? Would you try to steer them back to atheism, forbid religion entirely in your home, or encourage them not to get into religion until they are older?

Or would you do something else?