Mr. Kelly was saved May 16th, 1950 at the University of Tennessee. A well-attended area wide revival meeting was taking place. A few days after his conversion he announced the call of the Lord for him to preach. A church in Knoxville licensed him 10 days after he was saved to preach the Gospel of the Lord Jesus Christ.
Mr. Kelly attended Carson-Newman College in East Tennessee. Early in his ministry he pastored churches in NC and TN. Then, he entered the field of Evangelism. The Lord used him to preach in churches, auditoriums, and tents for many years. Also, he was known for his ability as a Gospel singer. Therefore, he preached and sang at many of the camp meetings. Due to that fact he become known as "Mr. Camp meeting".
Mr. Kelly received an Honorary Degree of Doctor of Divinity from Tabernacle Baptist College, Greeneville, SC in 1987. Also, an Honorary Degree of Doctor of Divinity from Trinity Baptist College in Jacksonville, FL in 1992.
Billy Kelly entered Heaven's shore on April 1st, 1997.