Harold Lloyd Casey was born November 27, 1931, in Bosque County, Texas. He graduated from Baptist Bible College, Springfield, Missouri is 1955. After graduation he pastored Immanual Baptist Church, Brooklet, Georgia, The Saint Marys Baptist Tabernacle, St Marys, Georgia, and founded and pastored the Bible Baptist Church of Myrtle Beach, South Carolina. 

When Bro. Casey surrendered to go to the field of Costa Rica in 1970, the Baptist Bible Fellowship did not approve single men so Bro. Casey went from his sending church, Hallmark Baptist Church, Fort Worth, Texas. He was approved by the Fellowship in May 1993 after the Fellowship began to accept single men.

Three churches and one mission were established during his ministry. On January 15, 1998, Bro. Casey was working on the second floor of his main church building when he fell and sustained a massive head injury. The national pastor that delivered the message was trained under Bro. Casey's ministry. He related how Bro. Casey was a man of principles and convictions, a humble, hard working servant of the Lord. 

Harold Casey was 66 years old when he is buried in San Jose, Costa Rica.