The Iliad 16.710–720

So spake he, and Patroclus gave ground a great space backward, avoiding the wrath of Apollo that smiteth afar. But Hector at the Scaean gate was staying his single-hoofed horses, for he was divided in mind, whether he should drive again into the turmoil and do battle, or should call to the host to gather them within the wall. And while he pondered thus there drew nigh to him Phoebus Apollo in the likeness of a young man and a strong, even of Asius, that was uncle to horse-taming Hector, and own brother to Hecabe, but son of Dymas, that dwelt in Phrygia by the streams of Sangarius. In his likeness spake Apollo, the son of Zeus, unto Hector: Hector, wherefore dost thou cease from battle? It beseemeth thee not. I would that I were as much stronger than thou as I am weaker;then straightway would it be to thine own hurt that thou drawest back from the war. Nay, come, drive against Patroclus thy strong-hoofed horses,if so be thou mayest slay him, and Apollo give thee glory.