John Gill's  Exposition of the Bible 

2 Samuel 11:22

So the messenger went, and came and shewed David all that Joab had sent him for.

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.