âThe multisite congregation is the single most profound change in American congregations in the past century.â âThom Rainer, CEO, LifeWay Christian Resources By Jim Tomberlin When I started down the multisite path as a senior pastor in Colorado in the 1990s, multisite was a radical idea. In the first decade of the 21st century, multisite became the cool idea among large, cutting-edge churches. As it approaches the end of its third decade, multisite has become the mainstream idea for healthy, growing churches of all kinds and sizes. This movement is comprised of more than 5,000 denominational and nondenominational churches that