In 2011, Frances Young delivered the Bampton Lectures in Oxford to great acclaim. She offered a systematic theology with contemporary coherence, by engaging in conversation with the fathers of the church -- those who laid down the parameters of Christian theology and enshrined key concepts in the creeds -- and exploring how their teachings can be applied today, despite the differences in our intellectual and ecclesial environments. This book results from a thorough rewriting of those lectures in which Young explores the key topics of Christian doctrine in a way that is neither simply dogmatic nor simply historical. She addresses the congruence of head and heart, through academic and spiritual engagement with God's gracious accommodation to human limitations. Christianity and biblical interpretation are discussed in depth, and the book covers key topics including creation, anthropology, Christology, soteriology, spirituality, ecclesiology and Mariology, making it invaluable to those studying historical and constructive theology.