Alan Sell is a prolific author producing a vast output of high quality research across many disciplines. From philosophy and theology to ethics and history his work has been received with acclaim for its clarity and incisiveness, as well as for its relevance to contemporary issues faced by the church. Throughout, Sell has maintained an unwavering commitment to Reformed faith and the unity of the church universal. His work continues to deliver challenges and inspire reflection for those who are interested in thinking deeply about issues of living under the cross of Christ in the world today. In this book, several colleagues, friends, and admirers have gathered together to honor Alan Sell's contribution to scholarship and to the life of the church. Leading Christian scholars--including Gabriel Fackre, Clyde Binfield, Keith Clements, and Donald McKim--here offer reflections on Professor Sell's work, and other related themes under the banner of the unity of the church in the contemporary world. The essays explore the foundations of unity, its historical context, and some of the challenges of ecumenism today. Together they make a unique contribution to the theme which has occupied so much of Sell's attention over the years, and which continues to be of crucial importance to the life of the church in a new era.