It is the voyage of truth. The truth that begins as a secret.
Held first by the highest of priestesses, it could only have been trusted with her. Not only did she keep the secret, guard the truth, but she didn't even tell you she knew of its existence.
Split apart, fact from fiction, its next stop was into the hands of Justice, lifetimes later, when the time was right. The past on one side of the scale, the future in the other.
Its final stop, twenty, using Roman numerals, Judgment. Neither fact nor fiction here, an X for both, the truth is found in the middle. No interpretation. Only release and the grace that follows.