 He was educated at Campbell College grammar school and then at Queen's University, where he took primary and master's degrees in agriculture.He then decided to become a minister and completed his theological training at New College Edinburgh and at the former Assembly's College, now Union Theological College.Morrow's first charge was at Seymour Hill Presbyterian Church near Lisburn, where he served as minister and pursued a career in the difficult and often controversial area of ecumenical relations.