Football is a religion to many people. But few know the depths of both faiths as well as Bill McCartney, the former head football coach of the University of Colorado and the founder of Promise Keepers, a Christian menâs ministry. âThe Gospel According to Macâ tells the truth-is-stranger-than-fiction story of Coach Macâs controversial national championship run â two seasons that followed multiple arrests and strife between his mostly African-American players and the Boulder police, continued with McCartneyâs own daughter becoming pregnant by the teamâs quarterback before seeing that same quarterback struck by cancer, and culminated in consecutive Orange Bowl match-ups against Notre Dame. Bill McCartneyâs passionate and often polarizing beliefs have made him many enemies and many admirers, but itâs difficult to deny that he embodies the essential issues facing football in America to this day.