THIS ANNIVERSARY EDITION OF KARL BARTH'S LECTURES ON THE LORD'S PRAYER, ALONG WITH SUPPLEMENTARY ESSAYS BY THREE BARTH SCHOLARS, INTRODUCES US TO WHAT THIS PREEMINENT THEOLOGIAN HAD TO SAY ABOUT THE CHRISTIAN PRACTICE OF PRAYER. UNDERSTANDING WORSHIP TO BE THE ULTIMATE AIM OF ALL THEOLOGY, BARTH HERE MINES THE THEOLOGICAL AND SPIRTUAL WISDOM OF LUTHER, CALVIN, AND THE HEIDELBERG CATECHISM AND URGES US TO PARTICIPATE IN THE WORK OF GOD THROUGH PRAYER.