Still, this time I will yield, for all my outrage…
but I tell you this, and there’s anger in my threat:
if ever – against my will and Athena queen of armies,
Hera and Hermes, and the god of fire Hephaestus –
if Zeus ever spares the towering heights of Troy,
if he ever refuses to take her walls by force
and give the Argive troops resounding triumph,
let Zeus know this full well –
the breach between us both will never heal!
– Homer
The Iliad, Book 15, lines 251-259. To avoid further conflict between the gods, Poseidon reluctantly agrees to Zeus’s request to stay out of the Trojan War. But he also tells messenger goddess Iris to warn Zeus not to spare the walls of Troy or refuse victory to the Achaeans.