After moving to Memphis and establishing it as the headquarters of COGIC, Mason founded and pastored the Temple COGIC. He established the annual "International Holy Convocation" to be held annually each year. As the church continued to grow, he established departments and auxiliaries including the Women's Department, Sunday School, and Young People Willing Workers (YPWW) which is known today as the International Youth Department (IYD). He also appointed overseers and established dioceses of the church throughout the country. Bishop Mason's preaching was very practical and his delivery was spontaneous, often moving from teaching to preaching to singing and praying all in one presentation. However, he is most known for his consistent, disciplined and deliberate prayer life. In fact, COGIC prides itself as a church built on prayer and fasting. Bishop Mason is credited with writing the prayer chant, "Yes Lord" that has become known worldwide and sung not only by COGIC, but countless churches and other denominations and reformations.