The two towns that were to be destroyed represent the North Pole and the South Pole, the two poles of the world. For all the treasure of the earth, all possessions and power and fame that belong to the earth, are subject to destruction. And that was taught to Lot, the human soul, who was the relation of Abraham, the divine soul, which is from Brahma, the Creator. The relationship of Lot with Abraham represents the relation of the human soul to the Creator. The two angels were the angels of light and of reason. When the light comes to man, its first teaching is to warn the soul of the disaster that awaits all that is subject to death and destruction. It is this lesson that is called in Sanskrit the lesson of Vairagya -- when man's eyes open to see that all that he loves and likes and wishes to hold and possess is subject to destruction and death.