The second group of principles refers to Revelation. The real process of revelation, by what means and in what manner the infinite and incorporeal Being makes His Will known to man, and how the latter becomes conscious and convinced of the fact that a Divine communication has been made to him, remains a mystery to all but those privileged persons who have been actually addressed by the Almighty. “As the blind man who had never possessed the sense of sight is incapable of comprehending the actual process of seeing, so are we, born without that wonderful prophetic eye, without the prophetic faculty of the mind, incapable of comprehending and depicting the process of inspiration that goes on within the mind of the privileged” (Schmiedl, Studien, p. 183). God reveals Himself also in nature, in the power and wisdom displayed in its phenomena. He reveals Himself in the history of nations, and especially in the history of Israel. He reveals Himself in the intelligence of man. In all these cases the revelation is made to all alike. Those who have eyes may see, those who have ears may hear, and recognise, every one according to his capacity, the presence of the Almighty in the working of the laws of nature, in the development and fates of nations, and in the life of every individual person. In all these cases we can test and prove the revelation by ourselves, and need not exclusively rely on authority. When, however, a Divine communication is made to one privileged individual, through whom it is made known to a whole community, or to mankind, there is no other means of testing the correctness of the revelation than the trustworthiness of the privileged individual.