Outcast by Kirkman & Azaceta (2014)

Robert Kirkman and Paul Azaceta build a slow-burn supernatural horror around Kyle Barnes. Demonic possession has shadowed Kyle's life since childhood, driving him into isolation and wrecking the people closest to him. When he learns he can drive the demons out, he joins forces with Reverend Anderson and starts pulling at a conspiracy that runs far deeper than one cursed town.