But know this: God will not be tolerated. He instructs us to worship and fear Him.
A. W. Tozer writes, What comes into our minds when we think about God is the most important thing about us.... Worship is pure or base as the worshiper entertains high or low thoughts of God. For this reason the gravest question before the Church is always God Himself, and the most portentous fact about any man is not what he at a given time may say or do, but what he in his deep heart conceives God to be like.2
Worry implies that we don't quite trust that God is big enough, powerful enough, or loving enough to take care of what's happening in our lives. Stress says that the things we are involved in are important enough to merit our impatience, our lack of grace toward others, or our tight grip of control. Basically, these two behaviors communicate that it's okay to sin and not trust God because the stuff in my life is somehow exceptional. Both worry and stress reek of arrogance.