Worrying has no value; it adds nothing. Worrying comes from a place of little faith; it is us taking on God's domain of responsibility. Concern and worry are not the same things. We should be concerned with what is important to God. Worry has to do with thinking and leads to fear when left unchecked. When we worry, it is a sign of unbelief. Therefore, we should trust God for what He has said and concern ourselves with the kingdom instead.