As a concept of a place of eternal punishment, it was developed by European pagans at least a few hundred years before the time of Jesus.

Well...in general, probably several places at several different times. But in respect to Judaism and Christianity in particular, we see the idea of eternal punishment for the wicked even in Tanakh, and fiery punishment for the wicked certainly before the time of Christ. Christ's teachings regarding eternal punishment are quite in-line with Jewish teachings that were circulating in his day. *** For example: according to the Britannica online entry on Gehenna: The imagery of the burning of humans supplied the concept of “hellfire” to Jewish and Christian eschatology. Mentioned several times in the New Testament (e.g., Matthew, Mark, Luke, and James) as a place in which fire will destroy the wicked, it also is noted in the Talmud, a compendium of Jewish law, lore, and commentary, as a place of purification, after which one is released from further torture. *** But the idea of hell continued to evolve in Christian thought. For example: in the minds of Westerners it has been heavily influenced by Dante's poems, which by all accounts were heavily influenced by Greek ideas of the afterlife. Red-skinned, horned devils poking people with pitchforks in a volcanic cavern has extremely little resemblance to the Biblical description of afterlife punishment for the wicked.