2 Samuel 18:9 - Joseph Benson’s Commentary on the Old and New Testaments

Absalom met the servants of David Who, according to David's command, spared him, and gave him an opportunity to escape. But whom they would not arrest, the divine vengeance arrested. For the mule, on which he rode, went under the thick boughs of a great oak, and his head caught hold of the oak Probably he was entangled by the hair of his head, which, being long and thick, might easily catch hold of a bough. For it is likely he either wore no helmet, or he had thrown it away, as well as his other arms, to hasten his flight. Thus the matter of his pride was made the instrument of his ruin. Some think his neck stuck fast between two boughs, or arms, of this oak, and was so wedged in by the swift motion of his mule that he was not able to disentangle himself; but yet, that, by the help of his hands, he so supported himself as not to be strangled.