Putting my feelings for this book into words isn’t a hard task. Divine Mysteries is one of the least essential books in the Pathfinder 2e lineup. I look at Lost Omens: Divine Mysteries as an expansion book to another Lost Omens title, Gods and Magic. If you’re looking to buy this book, I would recommend buying them both together. 

Lost Omens: Divine Mysteries provides extensive profiles for the gods of Pathfinder, expanding on magic and offering numerous rumors surrounding both gods and magic, hence the title of the book. You’ll get the lore through a character named Yivali. The book is told through Yivali, which I found to be a very creative way to give us the information during my first read. Now, as I go back to re-read the book and pull it apart for my game, I found it to be rather obnoxious.