Ok, follow up question. Is Peter's lack of trust a result of God's failure to provide Peter with that ability, or did God provide what was needed and Peter freely chose to "not trust" as he should?
I'll say it this way, it's not a result of God's failure.
Matthew 14: 29-31
He said, “Come.” So Peter got out of the boat and walked on the water and came to Jesus. But when he saw the wind, he was afraid, and beginning to sink he cried out, “Lord, save me.” Jesus immediately reached out his hand and took hold of him, saying to him, “O you of little faith, why did you doubt?”
It's when Peter sees the wind, he became afraid. I find it interesting that He did cry out to Jesus to save him. What I do see though is that before that, he doubted. He looked at the cares of the world(to put it in everyday use) instead of looking to Jesus. We as Christians can do that, and do do that. We have a huge bill to come. Instead of looking to Jesus Initially, we look around. We doubt. Then when we are in real trouble(Peter sinking) we cry out to God for help. I told the men at my church a couple weeks back during our prayer breakfast about how we tend to worry about things until someone else can help us out. How come we trust men who fail us so easily instead of trusting God who never fails us.