Reddit reviews Signs and Symbols in Christian Art

Read this book, and stay clear of all the explicit occult stuff. If you're really interested in the deeper stuff, Owen Cyclops has some fascinating Twitter threads from the perspective of a man who got deeply into psychedelics, occultism, eastern religions etc before converting to Christianity and now teaches about occult imagery firmly as a warning for Christians. He recommends this book, but I haven't read it myself. Seems a lot broader.