Found these quotes in Linda Dillow's book that I mentioned earlier:
In Word Studies in the Greek New Testament, Kenneth Wuest wrote, "God commands us to 'Stop perpetually worrying about even one thing.' We commit sin when we worry. We do not trust God when we worry. We do not receive answers to prayer when we worry, because we are not trusting."
And...
George Muller said, "The beginning of anxiety is the end of faith. The beginning of true faith is the end of anxiety."
