Bishop James Oglethorpe Patterson, Sr. was elected in November 1968 as the first presiding bishop of the church by the General Assembly at the Sixty-First Holy Convocation of the church. Bishop Patterson was also to date the youngest person to ever be elected presiding bishop of COGIC at the age of 56; the second youngest was his nephew, Gilbert Earl (G.E.) Patterson who became presiding bishop in 2000 at the age of 60. The son-in-law of Bishop Mason, J. O. Patterson, Sr., had served the church previously as a member of the executive board and as executive secretary. He was pastor of the Pentecostal Temple Institutional COGIC in Memphis, Tennessee, and was the Presiding Prelate of the Tennessee Headquarters Jurisdiction. Patterson established protocols of worship, policy and practices. A new constitution and official manual of the church were completed in 1973. COGIC became a major force in the collective Black Church and worldwide Pentecostal movement. It has had rapid growth in many regions as one of the fastest-growing and largest religious groups in the United States.