As a lecturer, teacher and workshop facilitator, Cliff has worked across the United States as well as in Europe, the Middle East, Asia and Latin America. He lectures in high schools, colleges and universities. He continues to speak in churches of all denominations. As an ambassador of good will and healing he has met with such national and world leaders as President Jimmy Carter, Anwar el-Sadat, while he was president of Egypt and King (then Crown Prince) Fahd of Egypt. His work was recognized in Washington D.C. when he was made honorary chaplain of the United States Senate.