The Word of God was inscribed on a series of tablets that were dictated by [[God]] during creation "for the defense of mankind." [[Metatron]] is the [[angel]] who recorded God's word on a series of tablets. [[Crowley]] described Metatron as "The scribe... and suck-up. Took down God's word, picked up His cleaning." Metatron's personal note on the [[demon]] tablet reveals that there is a compendium of tablets about a variety of subjects, presumably on all the creatures that God created.<ref>[[8.07 A Little Slice of Kevin]]</ref> Metatron disappeared after completing the tablets.<ref>[[7.21 Reading Is Fundamental]]</ref>
[[Castiel]] says that if the Word of God is revealed, a [[prophet]] will be awakened. This prophet turns out to be [[Kevin Tran]].
The first tablet in the series was excavated by [[Dick Roman]] in Iran and describes how to kill the [[Leviathan]]. Sam and Dean use it to kill Dick Roman, but the
ritual weapon they use transports Castiel and Dean to [[Purgatory]].
The second tablet was in the hands of [[Crowley]] and is titled "Demons." It includes instructions on how to construct a weapon against demons, information on how to see [[hellhounds]], and most importantly how to seal the [[Gates of Hell]] by undertaking a series of [[trials]].
[[Angel]] protocol dictates that the prophet be taken to a desert to learn the Word. In Kevin's case, at first he isolates himself on a [[Fizzles' Folly|
boat]] owned by [[Garth]] and later in the [[Men of Letters Bunker]].
Under torture by Crowley, the angel [[Samandriel]] reveals that there is also a tablet relating to [[angels]]. Castiel locates it with Dean's help in one of [[Lucifer's Crypts]] and goes on the run with it to protect it from all threats after the tablet frees him from [[Naomi]]'s control. While Metatron states that it contains instructions on trials that, once completed, will seal [[Heaven]], this turns out to be a ruse. Both the angel and demon tablets were in Sam and Dean's possession and they attempted to use the angel tablet to find a way to reverse what Metatron did. Their plans were cut short when [[Gadreel]], possessing Sam, murdered Kevin Tran and made his escape with both tablets.
Pretending to want to lead Castiel to his grace, Metatron takes him to a library where both the grace and the demon tablet are. While Castiel gets his grace back, Metatron incapacitates him with a spell and escapes with the demon tablet. Castiel later tracks Metatron down and retrieves the demon tablet from where Metatron had hidden it: under the mattress of his bed in his apartment.