Weiss, Allan. "The Last of the Macabees"
Divergence: c 1270 BCE
What if: The Chosen People were selected in North America rather than on the banks of the Nile.
Summary: Millennia later, post-Roman European civilization colonizes North America, and finds local tribes embroiled in conflict about the "messiah".
Published: In Arrowdreams: An Anthology of Alternate Canadas (eds. Mark Shainblum and John Dupuis), q.v.