The Iliad by Homer Book 18 Page 13

nor yet does any other of the immortals who dwell on the snowy summits of Olympus.”

Then fleet Achilles answered her saying, “How can I go up into the battle? They have my armour. My mother forbade me to arm till I should see her come, for she promised to bring me goodly armour from Vulcan; I know no man whose arms I can put on, save only the shield of Ajax son of Telamon, and he surely must be fighting in the front rank and wielding his spear about the body of dead Patroclus.”

Iris said, “We know that your armour has been taken, but go as you are; go to the deep trench and show yourself before the Trojans, that they may fear you and cease fighting. Thus will the fainting sons of the Achaeans gain some brief breathing-time, which in battle may hardly be.”