Let me endeavour to explain my meaning by an ancient tale: If Patroclus had been brought to the tent still alive but without his arms (and this has happened to innumerable persons), the original arms, which the poet says were presented to Peleus by the Gods as a nuptial gift when he married Thetis, remaining in the hands of Hector, then the base spirits of that day might have reproached the son of Menoetius with having cast away his arms.
Thetis, a prominent Nereid, is central to the story of Achilles.
For example, Thetis helps Zeus and Hephaestus and provides magical items or advice to mortals like Achilles.
Witness these names: Nestor, alias Puith; Neptune, alias Poseidon; Oileus, alias Pendre; Priam, alias Hogath; Phoebus, alias Onewakax, alias Apollo; Pales, alias Shugansitha; Pelides, alias Peleus; Saturn, alias Kronos; Thaleia, alias Musae; Thestor, alias Suko, alias Bayrith, alias Calchas; Thetis, alias Arama, alias Mi, alias Mara, alias Achill'ya, alias Argos; Venus, alias Seinalt, alias Vishnu, alias Mira, alias Thor, alias Theo; Vulcan, alias Anawahah, alias Ir, alias Agni, alias Hefaste'yan; Calianessa, alias Vritta; Hecla, alias Jah, alias Tyronia, alias Nileus; Nemertis, alias Itra, alias Prometh'ya, alias Ari, alias Mithra; Opsendes, alias Miletus, alias Brahma, alias Ishaka, alias Davetat, alias Sakaya, alias Morototha; Pherna, alias Holasa, alias Iao, alias Crite, alias Thammus; Spieo, alias Pelides, alias Hecla, alias Vulcan; Thor, alias Padua, alias Hermes, alias Belus, alias Hiroth, alias Yossammis; Thoa, alias Thor, alias Neptune, alias Orion, alias Aph, alias Thulis; Quiurnus, alias Vishnu, alias Ahambre, alias I'isna, alias Atys, alias Etus.
Athena, in a rebellion to put the old fellow in a strait-jacket, "and would have succeeded had not Thetis brought to his aid the sea-giant Ægæon," probably a war-ship.
Mount Pelion is also the setting for the wedding of Peleus, a mortal hero, and Thetis, a sea goddess.
The wedding of Peleus and Thetis on Mount Pelion is a key event in Greek mythology, symbolizing the union of mortal and divine and setting the stage for the epic events that would follow.