Christendom is the geographical part of the world in which Christianity prevails or which is governed principally under Christian institutions. It can also mean Christianity as an organized religion. Christendom is focused on promoting the Reign of Christ the King. Christendom literally means "Christ's Kingdom", or "The Christian Kingdom". Re-building Christendom and restoring it to its primordial greatness is a calling in which every Christian today should feel called to participate, for the greater glory of Christ the King.