Revelation 8:8

8:8 Then the second angel blew his trumpet, and something like a great mountain of burning fire was thrown into the sea. A third of the sea became blood,

Revelation 20:14

20:14 Then Death and Hades were thrown into the lake of fire. This is the second death – the lake of fire.

Revelation 14:8

14:8 A second angel followed the first, declaring: “Fallen, fallen is Babylon the great city! She made all the nations drink of the wine of her immoral passion.”

Revelation 16:3

16:3 Next, the second angel poured out his bowl on the sea and it turned into blood, like that of a corpse, and every living creature that was in the sea died.

Revelation 21:19

21:19 The foundations of the city’s wall are decorated with every kind of precious stone. The first foundation is jasper, the second sapphire, the third agate, the fourth emerald,

Revelation 20:6

20:6 Blessed and holy is the one who takes part in the first resurrection. The second death has no power over them, but they will be priests of God and of Christ, and they will reign with him for a thousand years.

Revelation 21:8

21:8 But to the cowards, unbelievers, detestable persons, murderers, the sexually immoral, and those who practice magic spells, idol worshipers, and all those who lie, their place will be in the lake that burns with fire and sulfur. That is the second death.”