Bridging the age when gods lived alone and the age when divine interference in human affairs was limited was a transitional age in which gods and mortals moved together. These were the early days of the world when the groups mingled more freely than they did later. Most of these tales were later told by Ovid's Metamorphoses and they are often divided into two thematic
groups: tales of love, and tales of punishment.
Tales of love often involve incest, or the seduction or rape of a mortal woman by a male god, resulting in heroic offspring. The stories generally suggest that relationships between gods and mortals are something to avoid; even consenting relationships rarely have happy endings. In a few cases, a female divinity mates with a mortal man, as in the Homeric Hymn to Aphrodite, where the goddess lies with Anchises to produce Aeneas.
The second type (tales of punishment) involves the appropriation or invention of some important cultural artifact, as when Prometheus steals fire from the gods, when Tantalus steals nectar and ambrosia from Zeus' table and gives it to his own subjects—revealing to them the secrets of the gods, when Prometheus or Lycaon invents sacrifice, when Demeter teaches agriculture and the Mysteries to Triptolemus, or when Marsyas invents the aulos and enters into a musical contest with Apollo. Ian Morris considers Prometheus' adventures as "a place between the history of the gods and that of man". An anonymous papyrus fragment, dated to the third century, vividly portrays Dionysus' punishment of the king of Thrace, Lycurgus, whose recognition of the new god came too late, resulting in horrific penalties that extended into the afterlife. The story of the arrival of Dionysus to establish his cult in Thrace was also the subject of an Aeschylean trilogy. In another tragedy, Euripides' The Bacchae, the king of Thebes, Pentheus, is punished by Dionysus, because he disrespected the god and spied on his Maenads, the female worshippers of the god.
In another story, based on an old folktale-motif, and echoing a similar theme, Demeter was searching for her daughter, Persephone, having taken the form of an old woman called Doso, and received a hospitable welcome from Celeus, the King of Eleusis in Attica. As a gift to Celeus, because of his hospitality, Demeter planned to make his son Demophon a god, but she was unable to complete the ritual because his mother Metanira walked in and saw her son in the fire and screamed in fright, which angered Demeter, who lamented that foolish mortals do not understand the concept and ritual.