Well known people showing off the hand signal which represents Satan. ABOVE: Pictures From the Satanic Bible The following is an excerpt from the "Satanic Bible"... Horned Hand or The Mano Cornuto: This gesture is the Satanic salute, a sign of recognition between and allegiance of members of Satanism or other unholy groups. Signs Of Satan! (12 minute video) Note: As you can see, The Satanic Bible