I once was part of a survey on spiritual formation. Thousands of people were asked when they grew most spiritually, and what contributed to their growth. The number one contributor to spiritual growth was not transformational teaching. It was not being in a small group. It was not reading deep books. It was not energetic worship experiences. It was not finding meaningful ways to serve. It was suffering. People said they grew more during seasons of loss, pain, and crisis than they did at any other time. – John Ortberg