Sooner or later a servant of God discovers that he himself is the greatest frustration to his work. Sooner or later he finds that his outer man does not match his inner man. The inner man heads in one direction, while the outer man heads in another direction. He discovers that his outer man cannot be subject to the rule of the spirit and cannot walk according to God’s highest demands. He discovers that the greatest hindrance to his work is his outer man and that this outer man frustrates him from exercising his spirit. Every servant of God should be able to exercise his spirit, to secure God’s presence in his spirit, to know God’s word through his spirit, to touch men’s condition by his spirit, to convey God’s word through his spirit, and to sense and receive divine revelation with his spirit. Yet the frustration of the outer man makes it impossible for him to use his spirit. Many servants of the Lord are fundamentally unfit for the Lord’s work because they have never been dealt with by the Lord in a fundamental way. Without this dealing, they are basically unqualified for any work. All excitement, zeal, and earnest pleading is vain. This kind of fundamental dealing is the only way for us to become a useful vessel to the Lord.