The nothingness and incompetency of all flesh must be felt where it would be disposed to think itself competent. It must find its pretensions arrested and set aside when it has... such; it must find itself consciously weak where it might hope to be strong or capable of something. As to what self would lean on, it must find itself a hindering flesh where it would pretend to be a helping one.... We must be humbled when we are not humble, or in danger of not being so.