What does it mean in A Christmas Carol when it says Marley has no bowels?

This quote
appears in Stave One when the ghost of Jacob Marley visits Scrooge, and it has a couple of
different meanings.

First of all, this quote is anto a phrase from the first
book of John in the Bible: the "bowels of compassion." To have bowels of compassion
means that you are so concerned with a person's situation that you are moved to do something. In
other words, you are a caring and compassionate person.

By saying that
Marley does not have any bowels, Scrooge is basically saying that he was not a compassionate
person when he was alive. Moreover, the fact that he does not have bowels as a ghost shows
that...