2 Samuel 12:26-30

(26) В¶ And Joab fought against Rabbah of the children of Ammon, and took the royal city. (27) And Joab sent messengers to David, and said, I have fought against Rabbah, and have taken the city of waters. (28) Now therefore gather the rest of the people together, and encamp against the city, and take it: lest I take the city, and it be called after my name. (29) And David gathered all the people together, and went to Rabbah, and fought against it, and took it. (30) And he took their king's crown from off his head, the weight whereof was a talent of gold with the precious stones: and it was set on David's head. And he brought forth the spoil of the city in great abundance.

Though this relation is put in at the close of this chapter, it should seem that it must have taken place before Nathan's visit to David, and when his heart had not been melted down with true sorrow for his sin; for else the crown of the king of Ammon would have been a mere bauble in David's view after Nathan's visit.