Parallel
Revelation 20:14
Patriarchal Greek New Testament (1904) · Berean Standard Bible
καὶ ὁ θάνατος καὶ ὁ ᾅδης ἐβλήθησαν εἰς τὴν λίμνην τοῦ πυρός· οὗτος ὁ θάνατος ὁ δεύτερός ἐστιν.
Then Death and Hades were thrown into the lake of fire. This is the second death—the lake of fire.