Juror's Discussion With Pastor About Mercy, Empathy & Responsibilites as a Citizen Results in Overturned Verdict in Penalty Phase

During deliberations of the penalty phase a juror discussed "mercy and empathy" and his duties as a citizen with his pastor (starts at p. 37 of this 55 page opinion) but not the facts of the case.  The Supreme Court of California reversed the jury verdict in the penalty phase and remanded it to the trial court for a new trial of the penalty phase.
LINK:  http://www.courts.ca.gov/opinions/documents/S050102.PDF