Yes, I understand, understood, had understood, have been understanding, will continue to understand, etc. that it means
because, Mike.
My point here was that the reason is given
after the information that he went to prison. That's all I'm saying.
.
The initial point I was trying to make is that using
for to mean
because, you won't get the "for clause"
first. This isn't the case when
because is used to join two clauses. You can begin with the "because clause".
.
Even if a sentence begins with
for, then that "for sentence" will also come
after what it is giving the reason for -- as in your example.
.