If we insist on visible proofs from God, we may well prepare the way for a permanent state of disappointment. True faith does not so much attempt to manipulate God to do our will as it does to position us to do his will. As I searched through the Bible for models of great faith, I was struck by how few saints experienced anything like Job's dramatic encounter with God. The rest responded to the hiddenness not by demanding that he show himself, but by going ahead and believing him though he stayed hidden.
Philip YanceyIf prayer stands as the place where God and human beings meet, then I must learn about prayer. Most of my struggles in the Christian life circle around the same two themes: why God doesn't act the way we want God to, and why I don't act the way God wants me to. Prayer is the precise point where those themes converge.
Philip Yancey