The Tome of the Hieroprince functioned as a religious manuscript. It saw use among the Opaline Creed group on the world of Crucival, and it centered its teachings on the Hieroprince, a key figure within the Creed's belief system. Hazram Namir, also known as Umu Seven, a Creed member, frequently studied the Tome of the Hieroprince while involved with the faction in 4 BBY.
Alexander Freed's 2015 novel, Battlefront: Twilight Company, included a reference to the Tome of the Hieroprince.