He was born to a secular Jew
From Wikipedia:
"Gadahan's father, originally Phil Pearlman, grew up in Orange County, California. He was involved in the counterculture movement at the University of California at Irvine, and before Adam's birth became a self-styled religious Christian. He and his wife Jennifer changed their name to Gadahan, after the Biblical warrior Gidon or Gideon."
Dhimmi gone bad!!!