Am I attempting the impossible?

[Allan Topp]

I have a number of files that I would like to protect that I (tend to) 
open simultaneously and I would like to do that (and protect them again) 
with a single command line instruction like:

gpg -c filename1.ods, filename2.odb, file/...

and thereby only enter 1 passphrase for all of them.

I couldn't find any information but have been playing around with 
commas, semi-colons and the like ... and I have come up empty.

I would think it surprising that gpg doesn't support what I am trying to 
do but, in the lack of any information, who knows.

Can anyone help?

TIA