It seem likely that the stones prey on those with weak or frail souls. Look what Velius does to Wiegraf. But Razma ultimately lugs up to thirteen of them and it does him no harm!

I'm not how or why the Lucavi get contained in stones, but they are certainly evil and corrupt. They seem to revel in bloodshed and misery (particularly Queklain and Velius).

In essence the Zodiac Braves are messianistic followers of Ajora and Germonik is the Judas figure. The Glabados church makes the followers of Father Fara out to be the villains, but it seems likely to be the other way around. So imagine an inverted version of the gospels.

The original Ajora was male, but the new 'body' is female.