Hi Josh,
The symbolism used in Scripture is a wonder way that God paints a picture for us to show us His plan. You can see these symbols weave there way through many Scripture and even used in different ways, but always remaining consistant.
This teaching you bring forward is an extension of his teaching in the Lake of Fire series part 12 'GOD JUDGES THE WORLD IN A POND.'
It is amazing to comtemplate all the implications, for the Elect, that this "sea of glass" pictures.
Here is an excerpt from part 12 of the Lake of Fire series that goes along with what you posted.
http://bible-truths.com/lake12.html ---------
"And I saw as it were a SEA OF GLASS mingled with FIRE [yes, the fire of God’s spirit is a necessary part of this ‘sea of glass’]: 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 [ah, they too can now walk on water which is now smooth and calm as glass], having the harps of God"
All of the "raging and foaming" has been calmed SMOOTH AS GLASS by the fiery spirit of God. They now sing praises to God, symbolized by their harps! Jesus will yet calm the great sea of humanity. Be not deceived, the sea will yet "OBEY Him!"
GOD’S MINISTERS ARE FLAMES OF FIRE
I showed you earlier that Jesus Christ is not only IN the lake of fire, He IS THE LAKE OF FIRE. He is the Divinity in this spiritual fire.
Ponder this:
Like Christ, we too are raised with a "SPIRITUAL body" (I Cor. 15:44).
We are in fact called, "the BODY of Christ" (Eph. 1:23).
We will literally "be LIKE Him [Christ]" (I John 3:2).
God will make us into "ministers [of] FLAMING FIRE" (Psalm 104:4).
We too then will be like our God, "a CONSUMING FIRE" (Heb. 12:29).
God promises us that, "…the saints shall JUDGE THE WORLD…" and "we shall JUDGE ANGELS" (I Cor. 6:2-3)!
God tells us WHERE this judgment will take place:
"…they were judged every man according to their works," and "whosoever was not found written in the book of life was cast into THE LAKE OF FIRE" (Rev. 20:13 & 15).
Therefore, we, the Saints, the Body of Christ, the consuming fire ministers of God, the saviours of Mt. Zion, the manifested Sons and Daughters of God, along with our Head, Jesus Christ, also ARE THE LAKE OF FIRE!
THERE IS NO LITERAL LAKE, AND THERE IS NO LITERAL FIRE. Jesus Christ and His Body of Saints ARE THE LAKE OF JUDGING, PURIFYING, CONSUMING SPIRITUAL FIRE!!!
The lake of fire is a metaphor written in symbols that stand for what is being symbolized, not the symbols themselves. The lake of fire is composed of Jesus Christ the Judge of the world, Christ’s divine spiritual fire and brimstone, and the Sons of God who are the body of Christ who are also FLAMES OF FIRE (Heb. 1:7).
And the whole world will be judged BY US! After death, all the dead will be resurrected, they will all be judged, they will have to pass through the purifying lake of fire, they will have to PASS THROUGH US! WE will be their judge along with our Lord.
"Know ye not that the SAINTS SHALL JUDGE THE WORLD?"
And so, the GREAT SEA OF HUMANITY will be judged in the safety and security of the LAKE OF SAINTS!
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mercy, peace and love
Kat