The doctrine of the Trinity is one of the most distinguishing marks of Christian faith. This is the first book to present an overview of the role of the Trinity in Christian theology in relation to religious pluralism and other religions. Approaching the study of the relationship between Christianity and other religions from the perspective of the Trinity, this book surveys all the major contributions to the topic by leading theologians at the international and ecumenical level. Veli-Matti Karkkainen points to future challenges and areas in need of development, examining in detail a case study exploring how the Catholic Church has responded to Islam from the perspective of the Trinity. Students of theology and religious studies will find this an invaluable text for courses that discuss religious pluralism and Christianity's relation to other religions. Pastors, other Christian workers, and academics will also find it a handy reference tool for teaching and further study. 'Kärkkäinen brings the most important development of 20th century Christian theology (the rediscovery of doctrine of the Trinity) into conversation with the most important development of 20th century religious studies (the notion of religious pluralism). The result: a rumor of a Christian theology of religions and a discussion on which all Christians, theologians or not, should listen in.' Professor Kevin Vanhoozer, Trinity International University, USA 'This work is distinguished by short sentences, ease of style, and clear definition of the terms used... All in all, this work of survey and analysis is both informative and interesting. It will help readers to place themselves, as it were, on the map of this subject, and also enable them to engage with the issues that will be raised, as they surely will be, in the years ahead.' Church Times 'Veli-Matti Kärkkäinen's useful volume is both a mapping of some of the ways in which contemporary Christian theologians are seeking to align these two important currents with one another, and itself a contribution to that process of alignment.' Interreligious Insight 'The strength of this present book is its journalistic quality - it is a helpful exposition of the state of the art of those who have attempted to approach a Christian theology of religions from a trinitarian perspective...' Calvin Theological Journal