The ecumenical movement of the 20th century was a quest for unity born of a missionary concern for the world. Thus, from the beginning of present-day ecumenism, mission has been inextricably linked with unity. This volume explores the themes of unity, mission, and their relationship. Seventeen Roman Catholic and Protestant scholars offer essays in honour of George Vandervelde, a leading evangelical ecumenist from the Reformed tradition.

Contributions by: Albert M. Wolters, Jerald D. Gort, Timoteo D. Gener, Calvin Seerveld, Sander Griffioen, Jan A. B. Jongeneel, Richard J. Mouw, Martien E. Brinkman, Miroslav Volf, Lyle D. Bierma, Jeffrey Gros, John A. Radano, George H. Tavard, Robert Sweetman, Jonathan Chaplin