Final answer:
Zeus sends Hermes to rescue Odysseus from Calypso in The Odyssey. Hermes, the messenger god, delivers the command from Zeus to let Odysseus return home.
Step-by-step explanation:
In the epic poem The Odyssey, Zeus sends the god Hermes to rescue Odysseus from the nymph Calypso's island, where Odysseus has been held captive for several years. This intervention comes as a result of the gods' decision, guided by Athena's plea, to allow Odysseus to return to his home in Ithaca. Hermes, known as the messenger of the gods, effectively communicates Zeus's command to Calypso to release Odysseus.