This commentary is part of the Christadelphian Academic Commentary Series This volume is the first of a two-volume treatment of Isaiah 40-66. This volume covers chapters 40-48 (ISBN 978-0-9934440-2-9, hardback, 576 pages, November 2015); the second volume covers chapters 49-66 (978-0-9934440-3-6, hardback, 495 pages, November 2015).