Xplore by Center for Mission Mobilization.  This book is a seven lesson small-group discussion resource covering the basics of God's word, world, and work, helping students (or anyone!) gain a heart for the nations. - You'll visit God's World and learn about people groups that have never been reached with the Gospel. - You'll journey through God's Word and see His passion for His glory to be enjoyed by all peoples on earth. - You'll focus on how to participate in God's Work by Praying, Sending, Welcoming, Going, and Mobilizing.