The history of human kind is filled with examples how with full conviction leaders and followers in the name of material and spiritual progress find themselves fully engulfed in the illusory energy of the Lord, marching towards their destruction.
Indeed, as blind leads the blind, the power of their stupidity cannot be underestimated. The Supreme Personality of Godhead is so kind that he actually follows the desire of the conditioned soul and equips it with absolute faith into something absolutely relative.
Any preacher may be alert not to believe the dictations of his mind and his senses, knowing them to be fallible. Even when people talk about their conditioning, still they may not be freed of it as artificial humility doesn’t provide the liberation from ones acquired illusions. As a hungry man can conduct intricate seminars about the art of cooking, so can a cold hearted man conduct seminars about love and peace. Not knowing its real use, swinging the weapon of sastra around, he may finally cut of his own head.