 From 1958 to 1971, he was a member of the Iona Community, which greatly shaped his philosophy and Christian witness.In 1965, Morrow was a founding member of the Corrymeela Community, a Christian group committed to promoting peace and reconciliation in Northern Ireland.He served as the community's leader from 1980 - 1994, taking over the role from Corrymeela founder Ray Davey.