The Iliad 11.306–312

Then had ruin come, and deeds beyond remedy been wrought, and now would the Achaeans in flight have flung themselves upon their ships, had not Odysseus called to Diomedes, son of Tydeus: Tydeus' son, what has come over us that we have forgotten our furious valour? Nay, come thou hither, good friend, and take thy stand by my side, for verily shamewill it be if Hector of the flashing helm shall take the ships. Then in answer to him spake mighty Diomedes: Of a surety will I abide and endure, howbeit but for scant space shall be our profit, for Zeus, the cloud-gatherer, plainly willeth to give victory to the Trojans rather than to us.