In the course of a review of R. R. Reno’s Resurrecting the Idea of a Christian Society, Texas A&M professor James R. Rogers (an LCMS Lutheran) observes that most people on every side assume that going to church is a private activity. Christians are urged to go outside the walls of their churches to change society.
But it’s within the walls of churches that God works and society is changed. Dr. Rogers quotes St. Ignatius of Antioch:
Take heed to meet together frequently for thanksgiving [eucharis] to God and for his glory. For when you meet together frequently, the powers of Satan are cast down, and the destruction at which he aims is prevented by the unity of your faith.