Book excerpt: This volume outlines a Christian theology that takes worship as its basic framework, as the occasion of not only an approach toward God in piety but also separation from God in sin. Drawing on Luther, Calvin, and especially Karl Barth, Matthew Myer Boulton builds a Reformed liturgical theology, maintaining that the God of Jesus Christ is a "God against religion," one who saves human beings from religion by entering it, transforming it, and ultimately ending it.