What does it mean to hear God's voice and follow it? And can we be certain of the calling God has for us as His children? From Biblical times up to the present, men and women have asked these questions and forged out answers that enabled them to become what we now describe as "the saints of the Church." The faith journeys of some of these saints are recorded in They Knew Their God Volume Four by E. & L. Harvey who were inspired by the passage in Psalms 48:12-13: "Walk about Zion, go all around it, count its towers, consider well its ramparts; go through its citadels, that you may tell the next generation." In this volume, the authors introduce us to men and women who heard God's voice and followed. Matthew Henry was inspired to write enlightening Biblical commentaries; Lord Radstock and Frederick Baedeker were led to pioneer in Eastern Europe before it became convulsed by revolution and war; still others were called to labor at home, providing hospitality for God's people and preparing young candidates for the mission-field. But whatever their vocation, each heard God's voice and obeyed. Don't read this book, however, if you are stuck within denominational boundaries. Don't read it if you want a hard and fast blueprint for your lives. Don't read it if you have decided exactly what you will or will not attempt for God. But read it if you feel within you the unquenchable desire to bless the world through following the call of the One Who made you, loved you, and redeemed you. His Voice still speaks to listening ears!