User blog comment:Twilight Despair 5/Tablet Theories/@comment-12891159-20130721103518/@comment-3045936-20130721185810

Maybe the tablets give methods to deal with each race it talks abouts. Leviathans might have only the one method of killing/sending them back to Purgatory. Angels and Demons might have methods on how to both kill or seal them in their respected worlds; as well. Another theory is that the trials are the final last resort to prevent any one SP race from becoming too controling, demoinc, out of control etc like how Metatron described Leviathans, demons and angels. So the trials are God's last defense for man, against the supernatural again theory.