The final moments of the great army commander Joab bring his complex life to a close. His execution takes place at a holy sanctuary, followed by a burial in a location that deeply reflects his character. Benaiah ascends to the Tent of God on Mount Zion, an area of high ground housing the Ark and the altar where Joab sought refuge [רד״ק, אברבנאל, ביאור שטיינזלץ]. The execution itself presents a practical and religious challenge, as Benaiah was a priest who was strictly forbidden from coming into contact with a corpse. Commentators offer several explanations for how this was managed. Benaiah may have struck the fatal blow but quickly stepped back before Joab actually died, thus avoiding ritual impurity. Alternatively, the king's direct order might have simply overridden the priestly restrictions. However, another perspective suggests that as a high-ranking commander, Benaiah did not carry out the execution or the subsequent burial with his own hands. Instead, he issued the command to his men or court officials, taking full responsibility as Joab's successor [אברבנאל].
Following his death, Joab is buried at his home in the wilderness. On a practical level, this location was not necessarily a barren wasteland. It was likely an open pasture on the edge of the wilderness, well outside the cultivated and settled regions. Joab maintained a house there to tend to his flocks, and he was buried just outside, facing the open land [רד״ק, מצודת דוד, רלב״ג, אברבנאל, ביאור שטיינזלץ].
Beyond the practical details, the wilderness setting serves as a powerful symbol of Joab's life, interpreted in both positive and negative lights. The primary approach among commentators views this location as a testament to his immense generosity. His home was completely open and accessible to the poor, much like the wilderness is open to everyone. Joab established an inn in this remote area specifically to host and feed poor travelers. He was buried there to memorialize these good deeds, with the hope that the many people who had benefited from his hospitality would pass by and pray for his soul [רש״י, רד״ק, מצודת דוד, אברבנאל, מלבי״ם]. Furthermore, just as the wilderness is free from theft, Joab's home was known to be entirely free of stolen property [רד״ק].
Conversely, the wilderness burial is also seen as a form of fitting isolation. According to this view, a man who killed others through trickery and deceit did not deserve to be buried within a civilized society. The remote wilderness served as an appropriate resting place for someone with a history of such actions [רלב״ג, אברבנאל]. Finally, the wilderness setting is viewed as a broader symbol for the Israelites themselves. The loss of such a significant and powerful military leader left the nation feeling exposed and orphaned, as though they had been transformed into a desolate wasteland [רד״ק, אברבנאל].