Book excerpt: The atonement is at the heart of Christian doctrine. But how does it relate to the life of the church? And what difference does it make for worship and liturgy? Highly respected theologian Oliver Crisp sets out a new, comprehensive account of the nature of the atonement, exploring how this doctrine affects our participation in the life of God and in the shared life of the Christian community. Crisp builds on key insights from other historic substitutionary models of Christ's work while avoiding the problems plaguing penal substitution.