Cornerstone Christian Church of Effingham, IL exists to Transform Lives through the Love of Jesus Christ. The SquareOne is where it all starts. Download the app to find everything you want to know about Cornerstone. Your only a click away from listening to a message, reading the latest blog or finding a Life Group. Why not check out the calendar to find all the upcoming activities then share it with a friend on Facebook, Twitter or by email. Register for events and Receive notification about upcoming activities on your mobile device.