Many churches are switching to the multisite or multiservice models to manage crowded sanctuaries due to growing attendance. This solution seems sensible in the short term, but too often churches adopt this model without taking into consideration what the Bible says about it. Illuminating the importance of physical togetherness as a way to protect the gospel, this book argues that maintaining a single assembly best embodies the unity the church possesses in Jesus Christ. Jonathan Leeman considers a series of biblical, theological, and pastoral arguments that ask us to stop and examine intuitions or assumptions about what a church is. He reorients our minds to a biblical definition of church, offering examples of churches that have thrived with a single service at a single site and compelling alternatives for those looking to solve the complications that come with a growing church.