OK here is my 0.02

I think that Kevin Fernity represents eternity.

Kev - is a measurement of energy
Infinity- well you know what that is.

Tony in his near death experience did not want to own up to or be responsible for his actions in life.

He assumed a different persona with younger children and a different life. Kevin Finnity was the identity he wanted to assume.

The Monks represented the good in the world and basicly wanted to let Tony know that he must be accountable for his actions. Basicly they were on to him.

At the end when before going into the family reunion this is again where Tony was reminded of ownership, accountability, and responsibility.

We don't talk like that here?

The briefcase represented his life, but he was holding on to someone else's life, misrepresentation.

At the end you have to accept your fate based on the life you lead.

Everyone is here and waiting for you?

That is when Tony became scared. In the end you cannot hide what you have done.

This was also supported by Carmela's comment to Melfi abount worse criminals . In the end it does not matter.

Good Episode