For those who can receive it, the final Antichrist will be the devil himself, here on earth, in plain sight. And his angels are coming here with him.
31 Now is the judgment of this world: now shall the prince of this world be cast out.
30 Hereafter I will not talk much with you: for the prince of this world cometh, and hath nothing in Me.
Many brethren argue over that idea of Satan being 'cast out', thinking it means he was bound in the pit at Christ's crucifixion. That's not what our Lord Jesus meant though. He was pointing to the Revelation 12:7-9 event, which is still in our near future. And then that John 14:30 example shows how He meant that 'cast out' also, applies to Satan being who is coming, meaning here on earth in person.
Remove the blinders. Don't think for one minute that Satan can only come here on earth as a spirit to possess someone in a flesh body. That idea is actually one of his deceptions his children use today.
Satan, as with all the angels, has the outward image likeness of man, for that image comes from our Heavenly Father, and that means from the Heavenly dimension. Even the Archangel Gabriel's name means 'man of God'.
This is the casting out our Lord Jesus was pointing to...
7 And there was war in heaven: Michael and his angels fought against the dragon; and the dragon fought and his angels,
8 And prevailed not; neither was their place found any more in heaven.
That has not happened yet. It is in what is called the prophetic perfect tense, which speaks of an event that's yet future as though it already happened. Further Scripture here will show this.
That idea, "neither was their place found any more in heaven" is very important to grasp. That is pointing to the difference between the two dimensions, this earthly vs. the heavenly where God and His angels dwell. When this casting out happens, Satan's place in Heaven will be no longer. He will not be allowed to appear before God's throne and accuse brethren like he did in the Book of Job. It means the only other... place he can go, is to this earthly dimension we live in, here on earth in plain sight.
9 And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceiveth the whole world: he was cast out into the earth, and his angels were cast out with him.
10 And I heard a loud voice saying in heaven, Now is come salvation, and strength, and the kingdom of our God, and the power of His Christ: for the accuser of our brethren is cast down, which accused them before our God day and night.
Salvation, and strength, and the kingdom of our God, and the power of His Christ, will come IN HEAVEN then, because the devil and his angels will be cast out of the heavenly dimension, and not allowed back in. He won't be able to appear before God's throne and accuse us anymore.
The fact that "the power of His Christ" is mentioned at this event reveals this event could not have happened prior to Christ's death and resurrection. That places this event to be sometime after... Christ's death and crucifixion. The next verse will give us a more specific timing for this event of Satan's casting out of Heaven...
11 And they overcame him by the blood of the Lamb, and by the word of their testimony; and they loved not their lives unto the death.
And there it is, the event of brethren being persecuted at the end of this world, which is the 5th Seal of Revelation 6. That event our Lord Jesus also pointed to for the end in His Olivet discourse.
12 Therefore rejoice, ye heavens, and ye that dwell in them. Woe to the inhabiters of the earth and of the sea! for the devil is come down unto you, having great wrath, because he knoweth that he hath but a short time.
That "short time" is about the very end, the short time of "great tribulation" our Lord Jesus warned us about in His Olivet discourse.
Revelation 12:9 gave other titles for Satan used in Revelation, i.e., the dragon, that old serpent.
In Revelation 13:11, the 2nd beast, a beast king that comes up out of the earth, speaks like a "dragon".
In Revelation 12:3, we are shown the "great red dragon" that had seven heads, ten horns, and seven crowns, drew a third part of the stars (angels) to earth with him. The number of crowns there is different than the beast in Revelation 13 which is to have ten crowns. Rev.12:3-4 is thus pointing to Satan's rebellion of old, before the foundation of this world. If you don't understand this, then you've got some Bible studying to do. Our Lord is actually showing you in Rev.12:3-4 what Satan did at his first rebellion and sin against God, that he is going to try and do it again at the end of this world, which is what the Rev.13 system is about.
In Revelation 12:15, the "serpent" cast out of his mouth water AS a flood after the woman, pointing symbolically to lies. Then the "dragon" (same one as that serpent, i.e., Satan himself), becomes wroth and goes to make war with the remnant of the woman's seed, i.e., Christ's Church, those who keep God's commandments and have the TESTIMONY OF JESUS CHRIST.
In Revelation 13:4-8, we are shown the whole world will worship the "dragon", excepting Christ's elect. And that dragon will blaspheme God's name, those in Heaven, and he will have power over all nations and peoples for 42 months.
Again, who is the "dragon" per Rev.12:9? It is Satan himself.
In Revelation 13:11-14, we are shown that "another beast" that will speak as a "dragon", will work great wonders on earth, raining fire from heaven down to earth in the sight of men! He will work miracles to deceive the whole world with! So it's bird, it's plane, its a pope, it's a mahdi, nope... it is Satan de facto, in person, here on earth in plain sight. He is coming with his angels, just as Apostle Paul also hinted to this future event in 2 Cor.11 that Satan disguises himself as an angel of light, and his ministers and ministers of righteousness.