The Mill Church is affiliated with the Assemblies of God (AG), headquartered in Springfield, MO.
The AG was organized in 1914 by a broad coalition of ministers who desired to work together to fulfill common objectives, such as sending missionaries and providing fellowship and accountability. Formed in the midst of the emerging worldwide Pentecostal revival, the Assemblies of God quickly took root in other countries and formed indigenous national organizations.
The AG is comprised of over 140 autonomous but loosely-associated national groupings of churches which together form the world's largest Pentecostal denomination. With over 300,000 ministers, 283,413 churches, and outstations in over 212 countries and territories serving approximately 57 to 60 million adherents worldwide, it is the sixth largest international Christian group.