Some years later, Pastor Johnson’s health began to wane again. He approached the church with a request for assistance, and recommended his son in the ministry, Reverend Walter K. Jackson, Pastor of the Corinth Baptist Church in Ardmore, Oklahoma. After Rev. Jackson prayed about the move, he and his wife, Eula Lee accepted the invitation. In June 1945, he became the Assistant Pastor.
Pastor Johnson’s wisdom, experience and dedication to God, combined with the highly intelligent, dependable, God fearing and strong leadership qualities of Pastor Jackson made a great team for “this, the Lord’s Church.” Co-Pastor Jackson had graduated from Bishop College in 1937 and brought a variety of new ideas and progressive methods to the church. He had observed a critical need in Oklahoma City and across the state for religious training of ministers and laymen. He suggested that the church establish an institute to teach the Bible and Baptist doctrine. He felt that the institute could serve a dual purpose as a living monument honoring and recognizing Pastor Johnson while providing a means to teach, educate and train ministers and laymen in theology. In September 1949, the Johnson Memorial Bible Institute (JMBI) was established with Rev. Thomas D. Callendar as its Dean. Through his able guidance, the Institute met its goal and provided training to many students across the state.