DON RICHARDSON, author of "Secrets of the Koran, Lords of the Earth and Peace Child," has been studying the Muslim world for over 30 years. He and his late wife, Carol, spent 15 years among the Sawi, a Stone Age tribe of Irian Jaya. Don designed an alphabet suited to the Sawi language, authored 19 primers, taught the tribesmen to read in their native tongue and translated the entire New Testament. More than half of the Sawi accepted Jesus Christ as their Lord and Savior. Since 1977, Don has served as ambassador-at-large for World Team, a mission organization. Don holds an honorary doctorate of literature from Biola University in La Mirada, California, is an ordained pastor and speaks at more than 40 church conferences each year.