At the time when Moses conveyed his message as a prophet to the ancient Egyptians, he also performed miracles. But, they did not accept the miracles as such and said that it was magic. When the Prophet Muhammad gave the call for the Truth in ancient Arabia on the basis of arguments, people said that if he was a prophet, why did he not perform miracles like Moses? All these objections are the products of non-serious minds. In the present world the most important condition necessary for someone to accept the Truth is that he should be earnest and serious. One who is not serious in matters of Truth and Untruth, nothing can force him to admit the Truth. On each occasion, he will seek fresh excuses for not doing so and will find new words to refute all arguments.