John Gill Commentary 2 Samuel 11:22

"So the messenger went, and came and showed David all that Joab had sent him for." — 2 Samuel 11:22 (ASV)

So the messenger went
From Joab, from the army before Rabbah:

and came ;
to David in Jerusalem, a course of sixty four miles:

and showed David all that Joab had sent him for ;
all the events of the war hitherto.