I searched the messages for help and one said to say 'destiny', that did not work. My cleric got a different response, The chossen one wears the Holy Signet. What and where is this signet?

The Signet is the ring you must find the Crypt to the east of the lake. Once you find Nivius there you'll be right on track.

Spoiler: here's a link to the map of the eastern portion o f the Gael Serran. The Crypt is at location "C" - Good luck!

Map

Yes, I cleared out the crypt, retrieved a Ring of the Saints, it was for my Clerics quest. When I met with Oban? to collect my experience, the ring disappeared. Is this the ring you speak of?

Nope. There is a second ring that you get from the ghost of Nivius in the water-filled tombs in the asylum area. That's the Holy Signet and the oracles won't talk to you unless one of your characters is either carrying or wearing it.

Well, I almost cleared it out!

Thanks Xignal