Zeus has been waiting for the selas ‘flash of light’. It will appear when the first of the beached Achaean ships is set on fire, I.15.600. Once the god sees that fire with his own eyes, his promise to Thetis will be fulfilled. He will have given to Achilles the honor that he had promised when he had nodded his head to indicate his plan, which was the Will of Zeus up until now. But now the paliōxis or ‘driving back’ of the Trojans by the counterattacking Achaeans, I.15.601, can get underway, I.15.602. On the technical function of paliōxis or ‘driving back’ as a poetic term referring to a specific part of the Iliadic narration, see I.15.069 and the comment on I.15.056–077. And now the kūdos ‘sign of glory’ will shift away from the Trojans and return to the Achaeans, I.15.602. Earlier, at I.12.255, the kūdos ‘sign of glory’ had gone over to the Trojans. See the comment on I.12.255–257.