And death and hell were cast into the lake of fire. This is the second death.
Then death and Hades were thrown into the lake of fire. The lake of fire is the second death.
Καὶ ὁ Θάνατος καὶ ὁ ᾍδης ἐβλήθησαν εἰς τὴν λίμνην τοῦ πυρός· οὗτος ὁ θάνατος ὁ δεύτερός ἐστιν, ἡ λίμνη τοῦ πυρός.
Kai o Thanatos kai o Adēs eblēthēsan eis tēn limnēn toy pyros· oytos o thanatos o deyteros estin, ē limnē toy pyros.