The church is described as "living stones" to represent it as a deeply interconnected community. We must neither give into culture nor withdraw from culture, but maintain our beliefs while engaging and serving the world. The power to maintain this balance comes from being secure in Christ and united as a church body, with him as our cornerstone. This sermon was preached by Rev. Timothy Keller at Redeemer Presbyterian Church on November 20, 2005. Series "The Vision of Redeemer". Scripture: 1 Peter 2:4-12, 21-25