The Old Testament Challenge (OTC) is a thirty-two week series designed for churches to teach, study, and discuss the entire Old Testament over a nine-month period. The goal of OTC is to discover the life-changing truths of the Old Testament and how we can apply them to our lives today. All four volumes include: teaching guide; messages on CD by John Ortberg; DVD & VHS presenting an OTC “vision-casting” message by John Ortberg and video elements for use during OTC messages; Discussion guide for small groups; CD-ROM that includes PowerPoint presentations to use with each OTC message, 10 FAQ resources about the Old Testament, and the “Are You an Old Testament Expert? Interactive game; Taking the Old Testament Challenge reading guide with a 40-week (or 32-week) reading plan; Implementation guide for launching OTC in your church.