War As a Lawsuit Before the Gods
The Bronze Age generally thought of war as a divine drama of law enforcement: war punished criminals who had offended the gods. The Hittites gave this conception a twist and imagined war as a lawsuit before the gods, who would favor one of the plaintiffs with victory. To the Greeks, Paris [of Troy] had twice violated the gods’ laws, first by committing adultery and second by abusing his host’s generosity. Menelaus’s fellow rulers had a clear responsibility to avenge the gods by going to war against Troy unless Helen and the treasures were returned. Anything less would expose themselves to divine punishment.
— Barry Strauss, The Trojan War, p. 27