LogFAQs > #932186604

The epitaph should have some deep meaning to it. Kinzo's thinks that solving it will lead to Beatrice's resurrection. By resurrection, I think he means the child that supposedly died years ago, and that she would show herself to Kinzo thanks to the epitaph.
From here it can be reasoned that solving this epitaph would reveal the existence of the child and maybe Kinzo's entire past with Beatrice(s). Maybe only that child, or those who knew fully about Kinzo's past, would be able to solve it. I don't think it's intended to be an actual ceremony to kill a bunch of people.