Because of this...
Because of this, and to cover over the truth of what he was saying, they called him ‘bewitched’ and his words, ‘bewitchment’. This in itself was an admittance of the strange effects of the invitation of the Holy Prophet. An evaluation of his self-sacrifice upon the way of his invitation shows that he, more than any other person, was a believer in and faithful to the precepts which he brought. He stood in some of the battlefields where those who had recently accepted Islam fled.
He paid no attention to the enemy who often threatened him in every way possible. He retained his beliefs and never showed weakness or doubt. Several times they tried to kill him on the excuse that he compromised with the deviates, but he never surrendered.
He would say, “If you give me the sun in one hand and the moon in another and all of the planets and stars be under my dominion, I will never give up my goal and surrender.” Not only was the effect of his invitation in public opinion wondrous, the speed by which it happened was also extraordinary. Those who have studied the books of western experts on the Middle East and on Islam, are all amazed by the speed of the spread of Islam.
For example, three of the most famous ones of the West who wrote, The History of Arab Civilization and Its Basis in the East, have said that this must be admitted. They say, “With all of the efforts for the understanding of the speedy progress of Islam in the world, the fact that in less than a century it was able to spread to most parts of the known world, is still a great puzzle.” Yes.
It is a puzzle that Islam was able to penetrate into the hearts of millions of people with such speed, to absorb civilizations and bring about new civilizations.
Finally, we reach the point that the enemies were a group of unbeliever leaders, oppressors and wealthy who only sought their own self-interests whereas those who found faith were most often the pure-hearted youth, from among the large group of the abased who longed for the truth and were even slaves, individuals who other than pure hearts, had no capital and who were thirsty for the truth.
From the totality of this study, which is a very extensive one, we can well conclude that this was a divine invitation, an invitation which flowed from something beyond nature, from the great Creator for the salvation of the human being from corruption and ignorance, polytheism, oppression and injustice.