George Fox emphasizes the danger of straying from the light, spirit, and power of God, leading to confusion and a lack of true form in life. He warns that those who follow their own wills and reject divine authority fall into a perverse spirit, resulting in a chaotic existence devoid of true purpose. Fox highlights the importance of maintaining the covenant with God and the necessity of both form and power in faith, as mere outward appearances without spiritual substance lead to condemnation. He calls for a return to the true forms established by God, which are essential for a sound and godly life.