 He served as the Canadian and North American Director of a missionary agency called "Interserve" (formerly Bible and Medical Missionary Fellowship) from 1967-1988.He was designated an "Evangelist-at-Large" within the Presbyterian Church in Canada during the 1970s and 1980s, and hosted a radio broadcast "Amazing Grace", sponsored by "Presbyterian Men", and broadcast on a few stations, and also participated on other radio ministries in both Canada and the United States.He was also active in the formation and early years of the Evangelical Fellowship of Canada and served for two years as that organization's President from 1969.