When Odysseus arrives on Scheria, he is initially disguised as a beggar. He is discovered by Nausicaa, the beautiful daughter of Alcinous and Arete. Nausicaa takes Odysseus to her parents' palace, where he is welcomed and given hospitality.
Alcinous and Arete are impressed by Odysseus's stories of his adventures, and they decide to help him return home to Ithaca. They provide him with a ship and a crew, and they also give him gifts.
Before Odysseus leaves, Alcinous and Arete give him a final command. They tell him to go to the island of Ogygia and speak to the goddess Calypso. Calypso has been keeping Odysseus captive on her island for many years, and she is reluctant to let him go. However, Odysseus is able to convince Calypso to release him, and he finally returns home to Ithaca.
The command of Alcinous and Arete is significant because it helps Odysseus to overcome the final obstacle in his journey home. It also shows that the Phaeacians are a kind and generous people who are willing to help those in need.