Explain why Revelation 12:10 say that the accuser of our bethren ie Satan -is- in Heaven accusing our bethren day and night BEFORE God, and then is being cast out ?
Revelation 12:10
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.
.....
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.
Satan can make a "court" appearance before the throne of God to make his accusations, but Satan is not allowed to roam freely in the third heaven, it is not his, nor his angels, abode.
The man of sin will be known for sure ONLY when Satan will enter his body and carry out the act of going into the temple, sitting, claiming to be God.... Why do you think that Satan will quit the body of that person after that ?
Revelation 13
3 And I saw one of his heads as it were wounded to death; and his deadly wound was healed: and all the world wondered after the beast.
4 And they worshipped the dragon which gave power unto the beast: and they worshipped the beast, saying, Who is like unto the beast? who is able to make war with him?
5 And there was given unto him a mouth speaking great things and blasphemies; and power was given unto him to continue forty and two months.
Near the middle part of the seven years, after the person has been the Antichrist (illegimate King of Israel) for around 3 1/2 years, the man of sin, son of perdition - like Judas was called for his act of betrayal - will become convinced in his heart (magnified) that he has achieved God-hood. I get that from two places. In Daniel 8, about the little horn person. And in Ezekiel 28:1-10, which God has the prince of tyre (a code name for the man of sin) destroyed for becoming magnified in his heart for claiming to be God. Who, the person, "sits" among the seas (a metaphor for the mass of humanity).
Satan wishes to be like the Most High and ascend to the throne of God. The temple is patterned of the real in Heaven. So that is why Satan enters the person temporarily. How long, I can not say, but God has the person killed for his audacious act.... and the person is the mortally wounded head in Revelation 13. At that time Satan would no longer have a body to possess. And the man of sin, slain, finds himself in hell in Isaiah 14.
God has such disdain for the person that in Isaiah 14, he cast the person out of the grave, brings him back to life. Which the person is then becomes possessed by the spirit of the beast in the bottomless pit, transforming the person into the beast himself. Satan is elsewhere, still accusing them in heaven.
Once the person becomes the beast, he makes war on the two witnesses and kills them ending their 1260 days testimony. That will be the last straw for God, and he brings the two witnesses back to life, followed by a huge earthquake. The seventh trumpet sounds and a process begins which the kingdoms of this world will be removed from the dominion of Satan's kingdom, Mystery Babylon, and become the kingdoms of God and His Christ - which the Kingdom of God will become the ruling kingdom here on earth at the end of the time, times, and half times (the second half of the seven years) at Jesus's glorious return.
The first action of that process will be to cast Satan and his angels down from the second heaven, which is going to be removed near the end of the process, at the end of the seven years. The war in the second heaven results in "Babylon is fallen is fallen". That is a referral to Satan and his angels when they are cast down to earth for that final time, times, half times in Revelation 12:14. Satan will no longer be able to make "court" appearance before the throne of God to accuse anyone before God again... from that point forward.
Satan, when he is cast down, will not possess the person, referred to as the beast because that person will already be possessed. How will Satan be worshipped, as it says in Revelation 13? imo, it is by Satan having the ability to incarnate the image (which will be a statue) of the former slain man of sin, who has become the beast, making the image appear to have life. Which the world will be required to worship. Whether it will openly be called Satan worship, by the people of the earth, I don't know.
When Jesus descends down to earth to end the rule of the beast and Satan upon the earth, judging the armies that have gathered at Armageddon to stop his Return, Satan will be bound in chains and cast into the bottomless pit - a different place than where the beast will be cast, the lake of fire.
So therefore, Satan is not possessing the person once the person becomes the beast because of the two different destinations at the end of the seven year. Only for the time, the person conducts the act of going into the temple and claiming to be God - which takes place near the middle part of the seven years - is the person entered into by Satan.
Of course, Satan eventually ends up in the lake of fire also, but that will take place at the end of the thousand years.
The bible does not say what happens to the Abomination of Desolation image of the beast that comes to life and demands worship, but what the bible does say in Ezekiel 28, in referring to the king of Tyre (a code name for Satan), that he will be cast down to earth, and made visible to the kings of the earth, and made to be brought to ashes before them. Ezekiel 28:17-19 (an amazing set of verses).
Ezekiel 28:19 All they that know thee among the people shall be astonished at thee: thou shalt be a terror, and never
shalt thou
be any more.
Which I conclude, the facade of the image, that is, it's physical makeup, whether it is made of gold or whatever, will be melted away by the presence of the Lord Jesus Christ - and there will be Satan on the temple mount, exposed for all the world to see him. Before the lone angel descends and binds him in chains and he is taken away to the bottomless pit.