1. What effect did Jesus ' self-disclosure of "I am the bread of life" have on the crowd of people and his disciples? What effect has it had on the way you live? What effect does God want it to have in our lives?2. Dietrich Bonhoeffer, in his book, "The Cost of Discipleship," makes a distinction between cheap grace (that costs you nothing) and costly grace (that costs a man his life). In what ways do you see the crowd wanting cheap grace, and in what ways do you see Jesus calling them to costly grace? 3. Many of Jesus' disciples left him after his bread of life teaching. What do you think was the hardest part of Jesus' teaching? Was Jesus' teaching hard to understand or hard to put into practice? Do you struggle to understand Jesus' teachings and how to faithfully live them out? How does Peter's confession in v. 68 help you persevere in your faith?