2 Samuel 10:2 - Joseph Benson’s Commentary on the Old and New Testaments

As his father showed kindness unto me All generous minds are full of gratitude and compassion. David here remembers the ancient benefits which he had received from Nahash, and pitied his son, who had lost such a father. What those benefits were is uncertain. It is probable, however, that, being an enemy to Saul, who had given him a great overthrow, he proved a friend to David when he was persecuted by him, sent him relief and assistance, and perhaps offered him his protection. David sent to comfort him According to the present custom among princes, who send some of their courtiers to condole with those, under any loss or suffering, with whom they live in friendship. And as, it appears, there had hitherto been friendship between David and him, we must conclude that what is said of the spoils of the children of Ammon, 2 Samuel 8:12, is mentioned by way of anticipation, and is to be understood of the spoils taken after the victory spoken of in this chapter.