1 Kings 2:34 (ESV)

34 Then Benaiah the son of Jehoiada went up and struck him down and put him to death. And he was buried in his own house in the wilderness.

With the assurance he was given, Benaiah went as he was ordered and killed Joab. He also caused him to be buried in his own house in the wilderness. We do not know why the wilderness was the location of Joab’s house. Had he set up a permanent residence in Ziklag that was in the wilderness of Judah?