Morneau was born in 1925 in Quebec, Canada. He was born into a very religious family where his parents were devout French Canadian Catholics; two of his aunts were nuns, and one uncle was a priest. As a youth Roger experienced the passing of his mother, and disillusionment in God he later claimed stemmed from teachings in Catholic books and the Church. He claimed to have been concerned with teaching that outside of the Roman Catholic Church, there is no salvation and felt he could not understand a God that would torture people eternally in hell.
As a young adult, Roger was introduced to spiritualism through a friend, and nearly joined a secret order of spirit worshipers who claimed to be the "elite" and were servants of Lucifier himself. Before Roger was to make a full commitment, however, he asked a Seventh-day Adventist co-worker, Cyril Grosse, if he would go over some Bible studies with him. This was what Roger needed to turn away from the realm of spiritualism and start his studies of Christ as an Adventist. In defiance to a bounty for his head of $10,000 (approximately $126,000 in 2012's US dollars), Roger became a Christian in the Adventist Church in 1946. In 1947, he married Hilda, a licensed vocational nurse in Montreal, and worked many years in telephone advertising sales. In 1984, a virus destroyed part of his heart muscle, giving him cardiomyopathy for the rest of his life. Morneau died in 1998.
^Gerald W. Wheeler, review of The Incredible Power of Prayer, Sabbath School Leadership 2 (February 1998), p25. Colleen Kelly, review of More Incredible Answers to Prayer: When You Need Incredible Answers to Prayer, Adventist Review 174 (17 April 1997), p28)
His other books are Trip into the Supernatural"(1982) Incredible Answers to Prayer(1990) More Incredible Answers to Prayer(1993) When You Need Incredible Answers to Prayer(1995) The Incredible Answers to Prayer(1997) Beware of angels, Deceptions in the last days.(1997)