Many church groups have church building property and perhaps charity properties such as charity shops, all as investments to supplement church income and store it, if laws permit. One other kind of property is intellectual property. Many churches, and non-Christian groups too, maintain a corpus of intellectual property such as copyrights. They can publish and sell books based on this. Of course the truth itself cannot really be copyrighted as intellectual property and marketed in that way, so they need unique additions or twists to make it distinct, so they can claim ownership of it and profit from book sales and merchandise. Effectively it becomes a brand, but it needs copyrightable ideas for book sales so they need to make things up and package it together with regular church stuff. I despise this monetisation of the word of God because it requires twisting of it for it to be profitable. Early church doctrines originally outlawed it, as a hawking of the message of God. (See Epistle of Clements.)
