Benjamin's mess noun phrase
The word "mess" can be replaced by "portion" without changing the meaning.
An especially generous or significant proportion of something
In terms of protection from God, he must have had Benjamin's mess as he has never fallen ill or had any accidents in his life.
Since she praticed Buddhism, she has felt that she has Benjamin's mess of luck.
A allusion to Genesis 43:34, in which Joseph, Jacob's son who was sold to the Egyptians and rose to become a high-ranking official, hosted a feast for his former siblings, with Benjamin getting a share (sometimes interpreted as "mess") five times that of the rest.
A remark you make when you are leaving on the purpose of creating a stronger impact
The letter he left before leaving was his parting shot.