According to Diodorus Siculus:This wedding of Cadmus and Harmonia was the first, we are told, for which the gods provided the marriage-feast, and Demeter, becoming enamoured of Iasion, presented him with the fruit of the corn, Hermes gave a lyre (lyra), Athena the renowned necklace and a robe and a flute (auloi), and Electra the sacred rites of the Great Mother of the Gods, as she is called, together with cymbals (kymbala) and kettledrums (tympana) and the instruments of her ritual; and Apollo played upon the lyre (kitharisai) and the Muses upon their flutes (aulesai), and the rest of the gods spoke them fair and gave the pair their aid in the celebration of the wedding.
This passage describes the wedding of Cadmus and Harmonia as a momentous occasion celebrated by the gods. It details the gifts given to Iasion by various deities, including Demeter, Hermes, Athena, Electra, Apollo, and the Muses. The passage highlights the importance of this event in Greek mythology.