There are three kinds of friends. Two can be valuable, but the third can actually help you become the person God created you to be. Beginning with Psalm 122 and the simple words “Let us go,” John Ortberg explores why friendship is so essential to human flourishing and why it seems increasingly difficult to find. Drawing on Aristotle's three kinds of friendship, John looks at useful friends, pleasant friends, and spiritual friends: people with whom we can be honest, vulnerable, challenged,...