J. I. Packer was one of the most influential evangelical theological and spiritual writers of the twentieth century, best known for his classic work Knowing God. In the 1990s Christianity Today readers named him one of the most influential theologians of the twentieth century, second only to C. S. Lewis. But who was Jim Packer, and what is the story of the man behind the writings? Alister McGrath, a bestselling author and friend of Packer, tells the story of Packer's faith and how it sustained him during his time in England and Canada. Along the way he explores Packer's many contributions to theology and spirituality, alternating narrative with reflection. By engagingly setting out Packer's ideas and the central themes of his work, McGrath helps to explain why Packer and his writing continue to be so helpful to millions on the journey of encountering God. This beautiful recollection of a giant of the Christian faith is both a celebration of his life and the perfect introduction to his thought and writings for a new generation of readers.