|“||Cut off the head, and the body will flounder. Waste not thy time nor thy breath on the Leviathan herd. Point thy blade at the heart of their master, for from him springs all their messages. Leviathan cannot be slain but by the bone of a righteous mortal, washed in the three bloods of the fallen: a fallen angel, the ruler of fallen humanity, and the father of the fallen beasts.||”|
— - The Word of God.
In 2012, Dick Roman excavated one of these tablets in Iraq, and had it flown to the United States on a private jet leashed from Donald Trump. Out of curiosity, Sam and Dean Winchester sent an employee of Dick, Charlie Bradbury, to hack into Dick's computy to find out what he was retrieving.
The brothers managed to steal the tablet before a Leviathan can retrieve from the airport. Once they've cracked open the stone encasing, Kevin Tran was chosen as the next Prophet. Kevin developed a near-uncontrollable urge to protect this artifact. Sam and Dean initially sought Castiel out for help in translating the tablet's contents, but Castiel was unable to. In his crazed state, Castiel teleported away, dropping the tablet causing it to break into three pieces.
Kevin then tried to steal the tablet, but were caught by Sam and Meg. Kevin repaired the tablet himself, and was able to translate it, providing Sam and Dean with the knowledge on how to kill a Leviathan.
Shortly after, Dick obtains the tablet and forces Kevin to translate it for him, or he will kill Kevin's mother, Linda Tran. After Kevin translated the tablet, Dick released Linda as promised and sent Edgar to kill the Alpha Vampire so that his blood could not be used against the Leviathans.
The tablet's current whereabouts are unknown. It was last seen within SucroCorp.
- The Leviathan tablet contains the secrets on how craft a weapon to kill a Leviathan, using a bone of a righteous mortal (human bones) washed in the blood of a Fallen Angel, of the Father of Fallen Beasts (Alpha's blood), and of the Ruler of Fallen Humanity (Ruler of Hell's blood). Also explains how or why God locked these monsters away.
- It is the only tablet to appear in Season 7.
- Unlike the Demon Tablet and the Angel Tablet, the Leviathan Tablet appears to give very limited information pertaining to the Leviathans and how to defeat them.