This book will give you an understanding of calling like no other book. Os Guinness gives a historical understanding of why we segment in faith and why it is unbiblical to do so. "What is the purpose of my life?" We all long for an answer to that question. In this deeply personal book, Oxford scholar Guinness explores God's call as the ultimate "why" of living. He examines the concept of "calling," shares his personal experience, and challenges readers to a life of focus, gratitude, humility, and vision.