Odysseus enlists the si of the Swinherd and the cowherd in his battle with the suitors because they recognize him as their master.
While Odysseus is plowing and destroying his fields, Agamemnon takes the new born Telemachus and places him in front of Odysseus' path. Odysseus avoids Telemachus, so that he does not kill him, proving that he is sane.
because he does not kmow how to swim
Penelope asks Odysseus if he will arrange to have his bed moved out of their bedroom while she gets used to him being home. Odysseus replies that this is impossible because the bed is built around a tree which grows within and forms a fundamental part of the structure of the palace and so to move it would be impossible. Only Odysseus would have known this and so he passes Penelope's test.
Rather than directly testing Odysseus and questioning him, Penelope asks her maid Eurycleia to move the great bed that Odysseus himself made with his own hands. This is a clever way of testing Odysseus because the bed was made in a way that would be near impossible to move and Odysseus finds Penelopes words 'a knife in [his] heart' The bed was made by using the trunk of an olive tree as the first bedpost, the tree was still rooted to the ground so Odysseus claims that even a man in his prime wouldn't be able to move the bed. Odysseus and Penelope are the only people to know how the bed was created so Odysseus has just give proof that he truly is who he says he is.
in book 10 ( but not quite at the beginning) it's Eurylochus who while on the scouting party at Circe's island, is the only one not to go inside and be turned to swine. He rushed back to inform Odysseus of what happened, then begs not to have to back there and show Odysseus the way.
Odysseus shows the swineherd Eumaeus and the stockman Philoetius his boar scar that he got on a hunt when young.
Odysseus had shown his scar to his faithful servants in order to prove that he (still disguised as the beggar) was truly Odysseus--King of Ithaca. He had to convince the swineherd and cowherd that he was Odysseus to get their aid on the plot against the suitors or in this case a slaughter in the halls. - Book 21 of The Odyssey
Odysseus proves his identity to different people in different ways: He shows the swineherd Eumaeus and the stockman Philoetius his boar scar. He strings his bow and shoots the arrow through the handles of the 12 axes. He tells Penelope that the bed cannot be moved. He tells his father Laertes each of the crops that were planted from year to year.
Odysseus proved his identity to Philoetius and Eumaeus by revealing a scar on his thigh that was left from a hunting accident many years ago. This scar was known only to them and Odysseus, thus confirming his true identity.
Odysseus proves he is Odysseus in Book 21 of the Odyssey by stringing his bow and executing a precise shot through a series of challenging tasks that only he could accomplish. His skillful handling of the bow, as well as his knowledge of secret details about the bow, convince others of his true identity.
how did odysseus prove who he was
To prove your identity at the Department of Motor Vehicles, you can use:
he showed them the scar
Odysseus proves his identity to Penelope by revealing a secret detail about their bed, which only he would know. He explains that he built their bed from an olive tree trunk still rooted in their home, making it impossible to move. This intimate detail convinces Penelope of his true identity as her husband.
Because, he has to prove to her that he is indeed Odysseus.
To prove to then that he is in fact Odysseus and not an impostor.
Penelope's final test for Odysseus is to ask him to move their bed, which Odysseus built himself and knows cannot be moved because it is constructed from an olive tree trunk that is part of the structure of their home. Odysseus passes the test by revealing this secret detail, allowing Penelope to finally recognize him as her husband.