In this activity he has been a leader in the discussions there on the evolving paradigm of Religious Naturalism .
Hefner was four times co-chair of the annual conference of the Institute on Religion in an Age of Science ( IRAS ) .
In this activity Hefner has been a co-chair in the discussions there on the evolving paradigm of Religious Naturalism .
Hefner was four times co-chair of the annual conference of the Institute on Religion in an Age of Science ( IRAS ) .