The Judas Codex — Mark Everett Stone

Blaine Deschamps has succeeded Julian as head of the all-powerful family known as the Sicarii, the fearsome descendants of Judas, the apostle who betrayed Christ for thirty pieces of silver. These silver coins became a powerful artifact known as The Silver, giving the Sicarii an edge in the battle against the forces of Good. Jude Oliver, born Olivier Deschamps, renounced his family and stole the Silver. In an epic battle, he killed his father, Julian, putting a major crimp in the Sicarii's plans. Although Jude gave his life to protect mankind, his friend, the Catholic priest Father Mike Engle, survived, and is now in possession of the Codex Infernales, the Deschamps' unholy book. The Sicarii will go to any lengths to kill Father Engle and retrieve the Codex, but the task proves far more difficult than they imagined. Mike is watched over by another arch-enemy of the Sicarii who has eluded their assassins for millennia: Cain, son of Adam, doomed to wander the Earth until he is killed, or the end of time, whatever comes first. Now Cain and Mike must fight the Sicarii, find a mysterious oracle, avoid ambushes, and ally with an old enemy of the Sicarii who has been fighting them for centuries. What could go wrong? Book 2 in the Judas Line Chronicles, which began with The Judas Line.