Church of God Mission International, as it known today, grew from a very humble beginning in 1962 as a prayer group first named Calvary Fellowship at a shop on Ivbizua Street, off Mission Road. It was officially inaugurated in 1965 by Rev. Edgar Perkins. On October 26th 1968, Rev. Perkins approached the Assemblies of God to release Benson Idahosa, then a Sunday School Superintendent, to oversee the prayer ministry. The fellowship moved to No. 26, Forestry Road, Benin City with Pastor Benson Idahosa fully in-charge.