Fear.

We must have an appropriate view of fear. We must not be afraid of what can happen to us in this world. Our circumstances, like the economy or cancer, may not ever get better even though we want them to. But we must not fear. We are to fear the Lord, as it is the beginning of knowledge and wisdom [Psalm 111:10; Proverbs 1:7; Proverbs 9:10].

"To fear and not be afraid--that is the paradox of faith." - A.W. Tozer