mcguire's ministerial background includes a wide variety of pastoral and administrative roles in the church of god. he pastored a total of 16 years before being appointed to serve as church of god state overseer of indiana in 1984. he went on to serve as the state overseer of texas (1986–88), western north carolina (1988–90) and tennessee. he has also been the assistant director of evangelism and home missions (1990–92), and the international director of military and multi-cultural ministries.