So what is justice for our ancestors when we see through time and space that the state will always defend itself? When it will justify HOW it defends itself?

Hell and the Underworld are not the same thing.

Various religious traditions have a concept of hell, but in the West the most prevalent version of this tends to come from Christianity. Through this lens, hell is a construct created within a cosmological system rooted in fear as a means of keeping people obedient and disciplined into a narrowed sense of living.