Welcome to the GBA website. Welcome to our website! GBA is a local Southern Baptist association. It is comprised of 49 churches and missions in Illinois, just east across the Mississippi River from St. Louis, MO. We are daily working in voluntary cooperation with the goal of reaching our specific area of Illinois for the Kingdom of God. GBA exists to assist churches in accomplishing the Great Commission (Matthew 28:18-20) through leadership development, fellowship, networking, missions involvement, church renewal and revitalization, and church planting.