The ministry of Dr. van Rooyen has spanned over forty years and five continents. As an Apostolic Leader, he has served as a missionary, pastor, teacher, evangelist, church planter, and relief worker throughout the globe. Dr. Leon strives to promote a love for God, a loyalty to the Church, and a passion for souls. As Founding President of GMR, Dr. Leon exemplifies that one can have a global vision without losing sight of the individual. Although reaching the masses is never far from his mind, specific and individual needs are undoubtedly close to his heart. As a result, much of his time is spent mentoring pastors, apostles, and developing leaders. In this case, he stands firm in his conviction that empowering these individuals through training is the greatest investment he can make. Every year, Dr. Leon travels to several nations to conduct leadership-training seminars in which he imparts powerful Biblical truths into thousands of eager spiritual leaders. Ultimately, he desires to foster maturity in these individuals and to see them reach their full potential by impacting their communities.