fire and brimstone

Though the fallen angels of the Bible are incarcerated and consigned to the same fate as the Titans, there’s no mention of Tartarus in the New Testament, with either the Greek abode of the dead, Hades, or the small valley in Jerusalem where child-sacrifice occurred, Gehenna (Hinnom), invoked for the concept, though the former is more neutral and would be better represented as the underworld.
There is however one instance that it sort of slips in—this homage to Antiquity—in verbal form: in the Second Epistle of Peter, condemning false prophets, the apostle uses the word (making an ensample of wickedness) tartaroo (ταρταρόω) for “to cast into Hell.” The original Greek rendering of the Apostles’ Creed that provides for and establishes among other things the harrowing of Hell, Jesus’ descent into the underworld to rescue all the righteous who had perished and were condemned prior to salvation, took the more pedestrian verb κατελθόντα είς τά κατώτατα (descendit ad inferos—to those below) but was far from unproblematic—prompting the need for a third estate, that of Limbo, a liminal place.