The pages, labeled with the god's name and a page number between one and four, are then placed in the book and filled. Once you have all four pages of that god's book, you can preach from it, as well as bless symbols (50 prayer required, only for Saradomin, Guthix or Zamorak).
With updates to Treasure Trails on 4 August2010, twelve new pages and three new god books have been introduced.
Prior to the patch notes of 4 July 2016, the player could only get one god page of each type per clue (e.g a clue reward with 1 Zamorak page 1, Zamorak page 2 and 1 Ancient page 3). They can now get two or three of the same pages in a potential clue reward.