If a preacher of Truth can present the Truth in the language of rational arguments, the proponents of falsehood may also utter such beautiful words against the Truth as could appear to be valid arguments in its disfavour. Both liars and tellers of the truth having at their command the same range of plausible expressions with which to support their arguments creates a situation in which man is put to the test. He must at all events pass the test of being able to distinguish between true and false arguments, and then accept true arguments, having rejected whatever is baseless. This state of affairs will necessarily continue till Doomsday. The ‘Satans’ among human beings misuse their intelligence to deceive others, but only those who have no fears about the Hereafter are influenced by them. Anxiety about the Hereafter makes a man serious and the reality of things can never remain hidden from one who sincerely serves God. But those who are devoid of any cares about the Hereafter are not serious about Truth and, as such, they are unable to understand the difference between solid argument and triviality.