By the way, if you did not understood the point, Satan having seen GOD face to face(pure LOVE) still made his choice and there is nothing that anyone can do to bring him back.
That would assume that God has no mercy , yet God's mercy never ends. it endures for all time ... and it would assume that God has not the will to save in His love and the power to save in His truth, this is not true...
If men turn against God in sin and can turn back to love later on, then so can Satan , there is no difference except the extent of sin , and a single sin is as bad as breaking the whole law of God because love is perfect, it does not include any sin ,
sin is the opposite of love , sin is breaking God's law of love ...
James 2:10 For whosoever shall keep the whole law, and yet offend in one point, he is guilty of all.
God then has a plan, and it involves not just a single step, but progressively removing men from slavery to sin , first Jesus successfully overcame temptation to sin, then the 144,000 [Rev 7:3-4] at his return are translated to spirit sealed away from sin forever in the spirit, then all Israel as a kingdom of priests [Exodus 19:6, 1Pet 2:9-10] and then these priests minister in the redemption of countless many afterward [Rev 7:9-10] ,masses of the gentiles ....
That leaves only Satan and all those who reject God's truth when it is given them in spirit baptism [Joel 2:28, John 16:13] ... so the most evil of men are separated from their prey that they preyed upon in this earth and thought it was fine to do so despite the misery they caused in their prey... the 'lake of fire' from God then is simply that there is no-one left to prey upon who does not prey back just as hard ... no-one thus benefits from evil any longer, the evil will thus feel the fire of God's truth in poetic justice, suffering their own evil themselves ...
It is a loving solution to all evil by a loving god ... the loving God!
And it is not love without mercy when these evil men turn from evil and accept love as their way, obey Jesus as lord commanding love ...
this Jesus says they will do, so why do men doubt him ? :-
Revelation 5:13 And, every created thing which was in heaven, and upon the earth, and under the earth, and upon the sea, and, all the things in them, heard I, sayingUnto him that sitteth upon the throne, and unto the Lamb, be the blessing, and the honour, and the glory, and the dominion, unto the ages of ages!
Every created being will accept the dominion of Jesus, accept him as lord, accept his commandment to love... that is Jesus' own prophecy and revealed to him by God ...
Thus God's mercy does endure t the end of time, and Satan , as a created being, is redeemed at the very last by accepting Jesus' dominion too, Jesus says so here.