What did Les say about the old horse being full of energy to do evil yet kept under control?

Les explains that people who thought they gained salvation by their own good works never understood they were riding that tremendous horse he had mentioned the previous program. That old horse was just loaded with energy to do evil, but they were able to keep it curried, calmed, and dressed. They might go through life and have themselves fooled all the way. Yet if the log could have really manifested itself, their beautiful horse would have exploded too. This follows his point that going to church or doing good works does not gain points for salvation, and many who filled pews still trusted their own works.