What is the prediction about Odysseus that the stranger swears on my oath to eumaeus?

In "The Odyssey," the stranger (who is actually Odysseus in disguise) swears an oath to Eumaeus that Odysseus will return home. He assures Eumaeus that Odysseus will come back to Ithaca and reclaim his rightful place, bringing an end to the troubles caused by the suitors. This promise serves to bolster Eumaeus's hope and loyalty while highlighting the theme of faithfulness and the anticipation of Odysseus's return.