Water Buffalo Theology marked the emergence of a self-conscious Asian Christian theology on the world scene when it was published in 1974. In this twenty-fifth anniversary edition, Koyama thoroughly updates the original, adding an retrospective introduction that records how he has changed his mind on many topics but maintained his position on others. In addition to eliminating several chapters, Koyama also adds one on his "pilgrimage in mission".

Water Buffalo Theology urges readers to abide by the first calling of Christianity -- to become an incarnation of God's love.

Offering a decisive challenge to the older reception of Pusey as a paragon of backwards scholarship, Tobias A. Karlowicz argues that Pusey is properly understood as a penetrating and original theologian whose work anticipated contemporary conversations about the nature of theology, and a pivotal figure in the history of Anglican theology. Karlowicz locates the heart of Pusey's project in a theological perception which looks through the physicality and concreteness of language, to discern Christ at the centre of both Scripture and the physical creation. This 'sacramental vision,' which grew from Pusey's critique of Christianity's decay and his formative engagement with patristic hermeneutics and ontology, forms his teaching on the sacraments as vehicles for a Christian life of eucharistic self-oblation in union with Christ, and demonstrates the relevance of his thought to contemporary theology.