In Hesiod’s Works and Days, Hermes puts speech in Pandora’s mouth.
Pandora is created at Zeus’s command as part of his punishment of humanity after Prometheus steals fire. Several gods contribute qualities or possessions to her. Hephaestus forms her body from earth, Athena dresses her, and Aphrodite gives her beauty and charm. Hermes, the messenger of the gods, supplies speech and a deceptive nature.
This detail comes from Hesiod’s account, not from every later retelling of the myth. Modern versions often simplify the story by saying that the gods gave Pandora gifts without identifying which god gave each one. Hermes is especially associated with communication, travel, trade, and cunning, so his role fits the broader pattern of the myth.
Hesiod’s Works and Days is also the ancient source that describes Pandora opening the large storage jar and releasing troubles into the world. The familiar phrase “Pandora’s box” reflects a later translation tradition.