When Larry Norman released "Upon This Rock" in 1969, its rock-star sizzle and blunt faith put the album in the soundtrack for millions of lives as the "Jesus Movement" revival surged onto the cover of Time magazine.

Music industry pros were used to hearing The Beatles on Capitol Records. Now there was a longhaired guy on the same label belting out: "Sing that sweet, sweet song of salvation to every man and every nation. Sing that sweet, sweet song of salvation and let the people know that Jesus cares."

Norman's work did more than shake up church youth meetings. His early success convinced some Gospel music executives to turn up the drums and guitar solos. Soon, "Contemporary Christian Music" grew into a billion-dollar industry with its own written and unwritten rules.

Now it was time for Norman to freak out Christians as much as he did secular-music people in the early years when he shared concert bills with Janis Joplin, The Doors, The Who and others. What were Christian radio stations supposed to do with "The Great American Novel," a song that addressed racism, war, poverty and other hot-button topics?

"You kill a black man at midnight just for talking to your daughter, then you make his wife your mistress and you leave her without water," sang Norman. "And the sheet you wear upon your face is the sheet your children sleep on, at every meal you say a prayer; you don't believe but still you keep on."

Norman "overloaded lots of people's circuits" and, eventually, even his own, according to philosopher Gregory Alan Thornbury, author of a new biography named after one of Norman's most famous tunes -- "Why Should the Devil Have All the Good Music?" The subtitle hints at future darkness: "Larry Norman and the Perils of Christian Rock." Norman died in 2008 at the age of 60.

Thornbury calls Norman the "Forrest Gump," a true "holy fool," of American evangelicalism. The scholar — and guitar player — doesn't hide Norman's struggles in business and his private life, adding a painful backstory to a career that put the singer shoulder to shoulder with everyone from the Rev. Billy Graham to President Jimmy Carter, and lots of colorful people in between. As a young man, Vice President Mike Pence was born again at a Christian rock festival -- headlined by Norman.