Revelation 15:2

Then I saw something like a sea or large expanse of glass mixed with fire, and those who were victorious over the beast and over his image and over the number corresponding to his name were standing on the sea or large expanse of glass, holding harps of God [worshiping Him].

Revelation 4:6

and in front of the throne there was something like a sea or large expanse of glass, like [the clearest] crystal. In the center and around the throne were four living creatures who were full of eyes in front and behind [seeing everything and knowing everything that is around them].

Revelation 5:8

And when He had taken the scroll, the four living creatures and the twenty-four elders fell down before the Lamb (Christ), each one holding a harp and golden bowls full of fragrant incense, which are the prayers of the saints (God’s people).

Revelation 12:11

And they overcame and conquered him because of the blood of the Lamb and because of the word of their testimony, for they did not love their life and renounce their faith even when faced with death.

Revelation 21:18

The wall was built of jasper; and the city was pure gold, transparent like clear crystal.

Isaiah 4:4-5

When the Lord has washed away the [moral] filth of the daughters of Zion and has cleansed the bloodstains of Jerusalem from her midst, by the spirit of judgment and by the spirit of burning,

Ezekiel 22:30-31

I searched for a man among them who would build up the wall and stand in the gap before Me for [the sake of] the land, that I would not destroy it, but I found no one [not even one].

Matthew 3:11

“As for me, I baptize you with water because of [your] repentance [that is, because you are willing to change your inner self—your old way of thinking, regret your sin and live a changed life], but He (the Messiah) who is coming after me is mightier [more powerful, more noble] than I, whose sandals I am not worthy to remove [even as His slave]; He will baptize you [who truly repent] with the Holy Spirit and [you who remain unrepentant] with fire (judgment).

1 Peter 1:7

so that the genuineness of your faith, which is much more precious than gold which is perishable, even though tested and purified by fire, may be found to result in [your] praise and glory and honor at the revelation of Jesus Christ.

1 Peter 4:12

Beloved, do not be surprised at the fiery ordeal which is taking place to test you [that is, to test the quality of your faith], as though something strange or unusual were happening to you.

Revelation 11:11-12

But after three and a half days, the breath of life from God came into them, and they stood on their feet; and great fear and panic fell on those who were watching them.

Revelation 13:14-5

And he deceives those [unconverted ones] who inhabit the earth [into believing him] because of the signs which he is given [by Satan] to perform in the presence of the [first] beast, telling those who inhabit the earth to make an image to the beast who was wounded [fatally] by the sword and has come back to life.

Revelation 19:1-7

After these things I heard something like the great and mighty shout of a vast multitude in heaven, exclaiming,

“Hallelujah! Salvation and glory (splendor, majesty) and power (dominion, might) belong to our God;

Treasury of Scripture Knowledge

Summary

And I saw as it were a sea of glass mingled with fire: and them that had gotten the victory over the beast, and over his image, and over his mark, and over the number of his name, stand on the sea of glass, having the harps of God.

Bible References

A sea

Revelation 4:6
and in front of the throne there was something like a sea or large expanse of glass, like [the clearest] crystal. In the center and around the throne were four living creatures who were full of eyes in front and behind [seeing everything and knowing everything that is around them].
Revelation 21:18
The wall was built of jasper; and the city was pure gold, transparent like clear crystal.

Mingled

Isaiah 4:4
When the Lord has washed away the [moral] filth of the daughters of Zion and has cleansed the bloodstains of Jerusalem from her midst, by the spirit of judgment and by the spirit of burning,
Matthew 3:11
“As for me, I baptize you with water because of [your] repentance [that is, because you are willing to change your inner self—your old way of thinking, regret your sin and live a changed life], but He (the Messiah) who is coming after me is mightier [more powerful, more noble] than I, whose sandals I am not worthy to remove [even as His slave]; He will baptize you [who truly repent] with the Holy Spirit and [you who remain unrepentant] with fire (judgment).
1 Peter 1:7
so that the genuineness of your faith, which is much more precious than gold which is perishable, even though tested and purified by fire, may be found to result in [your] praise and glory and honor at the revelation of Jesus Christ.
1 Peter 4:12
Beloved, do not be surprised at the fiery ordeal which is taking place to test you [that is, to test the quality of your faith], as though something strange or unusual were happening to you.

That had

Revelation 11:11
But after three and a half days, the breath of life from God came into them, and they stood on their feet; and great fear and panic fell on those who were watching them.
Revelation 12:11
And they overcame and conquered him because of the blood of the Lamb and because of the word of their testimony, for they did not love their life and renounce their faith even when faced with death.
Revelation 13:14
And he deceives those [unconverted ones] who inhabit the earth [into believing him] because of the signs which he is given [by Satan] to perform in the presence of the [first] beast, telling those who inhabit the earth to make an image to the beast who was wounded [fatally] by the sword and has come back to life.
Revelation 14:1
Then I looked, and this is what I saw: the Lamb stood [firmly established] on Mount Zion, and with Him a hundred and forty-four thousand who had His name and His Father’s name inscribed on their foreheads [signifying God’s own possession].

Stand

Ezekiel 22:30
I searched for a man among them who would build up the wall and stand in the gap before Me for [the sake of] the land, that I would not destroy it, but I found no one [not even one].

Having

Revelation 5:8
And when He had taken the scroll, the four living creatures and the twenty-four elders fell down before the Lamb (Christ), each one holding a harp and golden bowls full of fragrant incense, which are the prayers of the saints (God’s people).
Revelation 14:2
And I heard a voice from heaven, like the sound of great waters and like the rumbling of mighty thunder; and the voice that I heard [seemed like music and] was like the sound of harpists playing on their harps.
Revelation 19:1
After these things I heard something like the great and mighty shout of a vast multitude in heaven, exclaiming,

“Hallelujah! Salvation and glory (splendor, majesty) and power (dominion, might) belong to our God;