Sunday Evening Sermon «Problem of Exclusivity» was delivered by the Messenger Mark L. Prophet on January 1, 1973, during the New Year's “Light of the World” Conference, at Santa Barbara, California. It was initially published as the 4th lecture on 2-audiotape album “Sermons for a Sabbath Evening #6” and recently on the MP3 CD Album “Sermons for a Sabbath Evening #3”.