The Wages of Sin are War is a Tome found on the 8th level of the catacombs. It explains how the Great Conflict became the Sin War.

The Wages of Sin are WarEdit

An excerpt from the Wages:

"Take heed and bear witness to the truths that lie herein, for they are the last legacy of the Horadrim. When the eternal conflict between the High Heavens and the Burning Hells falls upon mortal soil, it is called the Sin War. Angels and Demons walk amongst humanity in disguise, fighting in secret, away from the prying eyes of mortals. Some daring, powerful mortals have even allied themselves with either side, and helped to dictate the course of the Sin War."

The author of is book is unknown, though it is presumed to be a mage of the Horadrim (possibly Jered Cain).

Tomes
Diablo I Tomes
Story Tomes — Book of Blood • Mythical Book • Book of the Blind • Steel Tome • Dark Exile • Sin War • Binding of the Three • Great Conflict • Wages of Sin are War • Tale of the Horadrim • The Realms Beyond • Tale of the Three • The Black King Items — Ancient Tome • Fungal Tome
Diablo II Tomes
Story Tomes — Moldy Tome • Horazon's Journal Items — Book of Skill • Lam Esen's Tome • Tome of Town Portal • Tome of Identify