Are these context per connection?

I.e. if I connect with user "abc" and do this:

"select rdb$set_context('USER_SESSION', 'LANGUAGE_ID', 3)from rdb$database"

and then another process/thread from the same machine connects again
using user "abc" and I do

"select rdb$set_context('USER_SESSION', 'LANGUAGE_ID', 1)from rdb$database"

I.e. set another language_id will I still get LANGUAGE_ID 3 for my first
connection when I do a "get_context" in the first process/thread?

Werner