The Outlaw’s Prayer (American Post-Civil War Westerns) by William Black

After a botched heist, outlaw Brick Driggers flees north and remakes himself as a preacher, husband, and father in Canyon City. But when his old gang resurfaces demanding one last job, and war brews between land-hungry miners and the Northern Paiute Tribe, Brick must choose to fight as the grim outlaw he was, or as the man of faith he longs to be.