Prayer to Hercules
HerculesStatius is writing for an occasion: his patron Pollius Felix has rebuilt a temple to Hercules at Surrentum, and the poet summons the god to its dedication.
The invocation is built on the ordinary "wherever you may be" formula, but unfolded out of Hercules' own biography: are you already living in your native Argos, free of your terms of service, treading on Eurystheus buried in his tomb — or do you hold the throne of your Jupiter? Both alternatives are rewards; the poet lets the god choose which of his prizes he is currently enjoying.
Liber … legibus is pointed: leges are the terms of service under Eurystheus, the twelve labours as a contractual obligation he has at last discharged.
The joke in the middle concerns Hebe, "better than the Phrygian shut out": Ganymede, Jupiter's cupbearer, is displaced in Hercules' service by Hercules' own wife. The poet flatters the god by demoting his father's servant.
And what is asked for is not favour but presence: "bring your genius into the temple being born". The building is ready; the deity is what is missing.