More Power To Ya, The Petra Devotional - 50th Anniversary Re-release The stories behind 52 of Petra's best-loved songs - The scriptural message behind the music - Scrapbook photos - Biographical info Petra's ministry spans fifty years, more than twenty-five albums and millions of miles on tour around the globe. Known for biblically-based lyrics and an uncompromised stand for Christ, Petra has sold more than seven million recordings, received four Grammys, and numerous Dove awards, was inducted into the Gospel Music Hall of Fame, and was the first Christian group enshrined in the Hard Rock Cafe. The Petra Devotional includes stories behind 52 of Petra's best-loved songs, the scripture message behind the music, along with scrapbook photos and biographical information.