Beast with seven heads, came out of the sea - another symbol of the Roman Empire. As we know, Rome was built on seven hills. Of course, John himself and the early Christians had no doubt that one of the heads of the dragon, first received a mortal wound, and then healed. It Nero, who committed suicide when he rebelled against his entourage, and then there was a rumor that he was alive. Historians claim that John's contemporaries was not difficult to solve the riddle: "Here is wisdom. Who has mind, that considers the number of the beast, for it is man's number; and his number is six hundred sixty-six ". In many ancient peoples number designated by the letters of the alphabet. If we substitute the letter of the 666, we obtain the words "Nero Caesar". Later, however, this explanation has repeatedly disputed and modern scholars believe that the "number of the beast" and did not solve.