22 Then Jesus said to his disciples: ‘Therefore I tell you, do not worry about your life, what you will eat; or about your body, what you will wear. 23 For life is more than food, and the body more than clothes. 24 Consider the ravens: they do not sow or reap, they have no storeroom or barn; yet God feeds them. And how much more valuable you are than birds! 25 Who of you by worrying can add a single hour to your life? 26 Since you cannot do this very little thing, why do you worry about the rest?
Luke 12: 22-25 (NIV)