Prayer . Is there anything in the world less glamorous and more important? In his new book, Prayer: Experiencing Awe and Intimacy with God (Dutton), Tim Keller distills decades of experience and biblical wisdom into a theologically informed, practically shaped guide for life on our knees. Blending sociological, theological, devotional, and methodological insights, he has produced a gift for anyone desiring to “gaze upon the beauty of the LORD” ( Ps. 27:4 ), petition him with humble boldness, and watch him respond with infinitely wise love. A vibrant prayer life is often grueling and rarely convenient. It’s hard-won. And it’s absolutely worth it. Nothing compares to the experience of knowing and revering and enjoying and receiving from the King of the universe—all of which, Keller demonstrates, is available to you through prayer. I asked the pastor of Redeemer Presbyterian Church in New York City about mysticism, the problem with quiet times, ...