They did not know what kindness meant. Besides, all the imagery that the Prophet has given to his people, the people were of that particular evolution. He could not have told them about the soul's greatness and a natural evolution. He had to tell them, when they said, "What is paradise, what is its life?" he had to tell them, streams of honey and fountains and milk they will find in Paradise. Because honey and milk to them was dearer than wisdom. He had to frighten them with the fire of hell; if not, they were ready to fight. But imagine that the words of the Prophet could fight with swords. What can be a greater miracle? It is not true that the Prophet always used his sword. The sword has in the cover. It was the Prophet's personality which won. No one but a soldier would have made impression on those people, who were ready to fight; who showed himself to be one among them, and at the same time God's messenger, together with the courage and bravery and strength and power that the Prophet showed.