I suppose may also (later) have had something to do with the days of the resurrection men, digging up the recently deceased and selling them on.

Quickly sounds ok, but I will probably go screaming into the long night!

Love that letter to the editor!

It's Biblical in origin, as in 'they rest from their labors' or 'find rest in their death.' But when one believes in a soul which, depending on the life lived, manner in which the individual died, and any number of things that might cause torment, the term is meant as a request or plea.