Revelation 15:2

And I saw what looked like a sea of glass mixed with fire, and standing upon the sea of glass those who had come off victorious from the animal and its statue and the number corresponding to its name. They had harps that God had given them,

Revelation 4:6

In front of the throne was what looked like a sea of glass, like crystal. Around the throne, in the middle of each side, were four animals covered with eyes in front and behind.

Revelation 5:8

When he took the roll, the four animals and the twenty-four elders fell down before the Lamb, each with a harp and gold bowls full of incense, that is, of the prayers of God's people.

Revelation 12:11

They have conquered him because of the Lamb's blood, and the message to which they bore testimony, for they did not cling to life even in the face of death.

Revelation 21:18

The material of the wall was jasper, but the city was pure gold, as transparent as glass.

Matthew 3:11

I am baptizing you in water in token of your repentance, but he who is coming after me is stronger than I am, and I am not fit to carry his shoes. He will baptize you in the holy Spirit and in fire.

1 Peter 1:7

they are to show that your faith when tested is found to be more precious than gold, which though it is perishable is tested with fire, and they will bring you praise, glory, and honor when Jesus Christ is revealed.

1 Peter 4:12

Dear friends, do not be surprised that a test of fire is being applied to you, as though a strange thing were happening to you,

Revelation 11:11-12

After three days and a half, the breath of life from God entered them, and they stood on their feet, and terror seized those who saw them.

Revelation 13:14-5

It leads the inhabitants of the earth astray by the wonders it is allowed to do on behalf of the animal, telling the inhabitants of the earth to erect a statue to the animal that bears the mark of the sword-thrust and yet lives.

Revelation 19:1-7

After that I heard what sounded like the loud shout of a great multitude in heaven saying, "Praise the Lord! Salvation, glory, and power 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
In front of the throne was what looked like a sea of glass, like crystal. Around the throne, in the middle of each side, were four animals covered with eyes in front and behind.
Revelation 21:18
The material of the wall was jasper, but the city was pure gold, as transparent as glass.

Mingled

Matthew 3:11
I am baptizing you in water in token of your repentance, but he who is coming after me is stronger than I am, and I am not fit to carry his shoes. He will baptize you in the holy Spirit and in fire.
1 Peter 1:7
they are to show that your faith when tested is found to be more precious than gold, which though it is perishable is tested with fire, and they will bring you praise, glory, and honor when Jesus Christ is revealed.
1 Peter 4:12
Dear friends, do not be surprised that a test of fire is being applied to you, as though a strange thing were happening to you,

That had

Revelation 11:11
After three days and a half, the breath of life from God entered them, and they stood on their feet, and terror seized those who saw them.
Revelation 12:11
They have conquered him because of the Lamb's blood, and the message to which they bore testimony, for they did not cling to life even in the face of death.
Revelation 13:14
It leads the inhabitants of the earth astray by the wonders it is allowed to do on behalf of the animal, telling the inhabitants of the earth to erect a statue to the animal that bears the mark of the sword-thrust and yet lives.
Revelation 14:1
Then in my vision I saw the Lamb standing on Mount Zion, and with him 144,000 people who had his name and his Father's name written on their foreheads.

Having

Revelation 5:8
When he took the roll, the four animals and the twenty-four elders fell down before the Lamb, each with a harp and gold bowls full of incense, that is, of the prayers of God's people.
Revelation 14:2
And I heard a sound from heaven, like the sound of great waters, and loud peals of thunder. The sound I heard was like that of harpists playing on their harps.
Revelation 19:1
After that I heard what sounded like the loud shout of a great multitude in heaven saying, "Praise the Lord! Salvation, glory, and power belong to our God,