The Ecclesiarchy is the official state church of the Imperium, the vast religious institution devoted to the worship of the Emperor as the one true god of mankind. Also known as the Adeptus Ministorum, it tends the faith of untold billions, and it is that faith which binds the disparate worlds of humanity into a single, fervent whole.
From towering cathedrals to the humblest wayside shrine, its preachers spread the Imperial Creed, comfort the suffering, and rouse the masses to zeal and sacrifice. In times of crisis it can call upon the warrior-sisters of the Adepta Sororitas to wage holy war against the faithless. For the full story of the Imperial Cult and the Emperor enshrined upon the Golden Throne, see the complete account of the Ecclesiarchy.