Campbell, who was raised in the Church of Christ, and Woollen both joined a Baptist church in Phoenix. In a 2008 interview they said that they have been adherents of Messianic Judaism for two decades.
- Hattenstone, Simon (August 26, 2011). “Glen Campbell: One last love song”. The Guardian. Retrieved August 27,2011.
- David, Paul (May 1, 1990). “Glen Campbell: The 1960s country pop star rediscovered his spiritual roots”. Cross Rhythms Magazine.
- Goodman, Dean (August 12, 2008). “Campbell Has Rock, Religion on his Mind”. Reuters. Retrieved September 11,2011.