2 Samuel 13:26 - Joseph Benson’s Commentary on the Old and New Testaments

Let my brother Amnon go with us That is, with him and the rest of his brethren, as appears from the following verse. David designed, it seems, to keep him at home with him, as being his eldest son, and heir of his kingdom; otherwise Absalom would never have made particular mention of him, which, in consequence of what the king said, he was now forced to do. Nor did Absalom's desire of Amnon's company want specious pretences, as that, seeing the king would not, he who was next to the king in dignity might honour him with his presence; and that this might be a public token of friendship between him and his brother, not withstanding the former occasion of difference.