Religious references are increasingly a mark of authenticity in rap. But Chamillionaire, whose new album, “The Sound of Revenge,” is just out, raises the bar with “Void in My Life,” a meditation on growing up with one Muslim parent and one Christian.

Which faith won out? The rapper–his real name is Hakeem Seriki, but he’s dubbed himself the “Mixtape Messiah”–not only goes to church every Sunday back home in Houston, but tithes, according to an interview in Philadelphia Weekly.