In order to understand that Satan will appear as the Antichrist in Jerusalem in the middle of the Five Month Long Hour of Temptation, we must start by looking at Daniel Chapter 9.
The Seventy of Sevens.
Daniel 9:24 KJVS
“Seventy weeks are determined upon thy people and upon thy holy city, to finish the transgression, and to make an end of sins, and to make reconciliation for iniquity, and to bring in everlasting righteousness, and to seal up the vision and prophecy, and to anoint the most Holy.”
Seventy Weeks are determined upon thy people and thy Holy City.
This is Seventy weeks of Seven years, and Seven means spiritual completeness.
Seventy multiplied by Seven equals 490 years.
Daniel 9:25 KJVS
“Know therefore and understand, that from the going forth of the commandment to restore and to build Jerusalem unto the Messiah the Prince shall be seven weeks, and threescore and two weeks: the street shall be built again, and the wall, even in troublous times.”
From the going forth of the commandment to restore and build Jerusalem shall be Seven weeks.
We find this restoration and building of Jerusalem mentioned in Nehimiah Chapter 2 and by looking at page 653 in E.W Bullinger’s Companions Bibe (Longer Notes on Special Passages in Nehemiah.)
On page 653 we can see the building and restoration of Jerusalem started in 454 B.C and its completion and dedication in 405 B.C.
Seven weeks of Seven (years) is forty-nine years, and we find this out by subtracting 405 B.C from 454 B.C.
And from Jerusalem’s dedication (405 B.C) unto the Messiah the Prince is sixty-two weeks, and if we multiply sixty-two by Seven (years) we will then have 434 years.
434 years from the dedication of Jerusalem that took place in 405 B.C, will bring us to 29 A.D, the year of Jesus Christ crucifixion.
Daniel 9:26 KJVS
“And after threescore and two weeks shall Messiah be cut off, but not for himself: and the people of the prince that shall come shall destroy the city and the sanctuary; and the end thereof shall be with a flood, and unto the end of the war desolations are determined.”
With the Seven weeks of Seven years (49 years) of the restoration of Jerusalem being fulfilled, along with the sixty-two weeks (434 years) that lead up to the point of Jesus Christ (Messiah the Prince) being cut off(crucified) not for Himself (John:316), we have sixty-nine weeks of Daniel’s Seventy Weeks of prophecy fulfilled.
However, Daniel’s Seventieth Week which is the last Week of Seven years of this prophecy, has yet to come.
“and the people of the prince that shall come shall destroy the city and the sanctuary; and the end thereof shall be with a flood, and unto the end of the war desolations are determined.”
Daniel’s Seventieth Week.
Daniel 9:27 KJVS
“And he shall confirm the covenant with many for one week: and in the midst of the week he shall cause the sacrifice and the oblation to cease, and for the overspreading of abominations he shall make it desolate, even until the consummation, and that determined shall be poured upon the desolate.”
This covenant which is a league that Satan will make with many will happen at the beginning of Daniel’s Seventieth Week that has been shortened to a Five Month Period.
Revelation 9:1-5 KJVS
“And the fifth angel sounded, and I saw a star fall from heaven unto the earth: and to him was given the key of the bottomless pit.  And he opened the bottomless pit; and there arose a smoke out of the pit, as the smoke of a great furnace; and the sun and the air were darkened by reason of the smoke of the pit.  And there came out of the smoke locusts upon the earth: and unto them was given power, as the scorpions of the earth have power.  And it was commanded them that they should not hurt the grass of the earth, neither any green thing, neither any tree; but only those men which have not the seal of God in their foreheads.  And to them it was given that they should not kill them, but that they should be tormented five months: and their torment was as the torment of a scorpion, when he striketh a man.”
Satan and his fallen angles which are his Locust army, will be cast out of Heaven after the war with Michael and his angels, at the Woe of the Fifth Trumpet, which BEGINS the Five Month Long Hour of Temptation (Daniel’s shortened Seventieth Week.)
Revelation 12:7-12 KJVS
“And there was war in heaven: Michael and his angels fought against the dragon; and the dragon fought and his angels,  And prevailed not; neither was their place found any more in heaven.  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.  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.  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.  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.
Woe to the inhibiters of the earth and sea! (Woe of the Fifth Trumpet) for the devil is come down unto you, having great wrath, because he knoweth that he hath but a short time, Five Months!
Daniel’s Seventieth week which was originally Seven years has been shortened to a Five Month Period, and if you take the original Seven years and split in half, you’ll have two- 3 and half -year periods.
However, with this final week of Daniel’s prophecy being shortened to a Five Month Period (Revelation Chapter 9 verses 1 through 5, and verse 10, and Mark Chapter 13 verse 20) you now have two 2- and a half- month periods, with the first 2 -and- a half- month period being the time span of the Woe of the Fifth Trumpet, and the last 2-and-a-half-month period being time span of the Woe of the Sixth Trumpet (both halves being the full term of the Locust.)
“and in the midst af of the week he shall cause the sacrifice and the oblation to cease, and for the overspreading of abominations he shall make it desolate,”
In the midst of Daniel’s shortened Seventieth Week (Five Months) when the Woe of the Fifth Trumpet passes, (Revelation Chapter 9 verses 12 through 21) and when the Sixth Angel sounds, another Woe will fall upon the earth, and that Woe is the Woe of the Sixth Trumpet.
When the Woe of the Sixth Trumpet begins in the middle of that time week when the Sixth angel sounds, Satan will make his APPEARANCE AS the Abomination of Desolation (Desolater) in Jerusalem.
Satan at that time will cast down the Sanctuary with that appearance, and will make the third of the world’s population who are Christians Completely Desolate .They will be made desolate and spiritually naked by believing that Satan is the true Christ return, this is their iniquity.
2 Thessalonians 2:1-4 KJVS
“Now we beseech you, brethren, by the coming of our Lord Jesus Christ, and by our gathering together unto him,  That ye be not soon shaken in mind, or be troubled, neither by spirit, nor by word, nor by letter as from us, as that the day of Christ is at hand.  Let no man deceive you by any means: for that day shall not come, except there come a falling away first, and that man of sin be revealed, the son of perdition;  Who opposeth and exalteth himself above all that is called God, or that is worshipped; so that he as God sitteth in the temple of God, shewing himself that he is God.”
This is the Great Apostacy (falling away) that will happen in the middle of Daniel’s shortened Seventieth Week (Five Months.)
Through this Great Apostacy, the third of the world’s population who are Christians will cease giving their love (Hosea 6:6) which is their sacrifice and oblation to our True Heavenly Father and will instead give it to the fake!
He is the Abomination of Desolation (the Desolater), that will stand where he ought not, claiming to be what he is not!
We can see Jesus speak about this time of the Abomination of Desolation (the Desolater) in Mark Chapter 13.
Mark 13:14-20 KJVS
“But when ye shall see the abomination of desolation, spoken of by Daniel the prophet, standing where it ought not, (let him that readeth understand,) then let them that be in Judaea flee to the mountains:  And let him that is on the housetop not go down into the house, neither enter therein, to take anything out of his house:  And let him that is in the field not turn back again for to take up his garment.  But woe to them that are with child, and to them that give suck in those days!  And pray ye that your flight be not in the winter.  For in those days shall be affliction, such as was not from the beginning of the creation which God created unto this time, neither shall be.  And except that the Lord had shortened those days, no flesh should be saved: but for the elect’s sake, whom he hath chosen, he hath shortened the days.”
Yes, He hath shortened those days to a Five Month period which is the Hour of Temptation, and in the middle of that Hour, (with Satan and his fallen angles having already been here since the beginning of the Five Month Period,) Satan will have to make his appearance as the false Christ (Little Horn) who is an abomination, to cause the third who are Christians to become completely desolate(spiritually).
“even until the consummation, and that determined shall be poured upon the desolate.”
Satan will keep many (who will stay in confusion) desolate even until the consummation that will take place at the end of Daniel’s shortened Seventieth Week (Five Month Period) at the Woe of the Seventh Trumpet, and it will be then when the that lawless one will be revealed, and his role of Antichrist will be destroyed with the brightness of our Lords coming.
2 Thessalonians 2:8 KJVS
“And then shall that Wicked be revealed, whom the Lord shall consume with the spirit of his mouth, and shall destroy with the brightness of his coming:”
That destruction from our Lord Jesus Christ upon His return, that has been determined, is the Seventh Vial (Revelation Chapter 16 verses 17 through 21) that will be poured out into the air thus destroying Satan’s deception which is again his confusion.
As Babylon falls, those who didn’t come out, and remained desolate within it, will have our Lords Wrath (Revelation Chapter 14 verses 8 through 20) poured upon them throughout the Lords Day, which is 1000 years also known as the Millenium.
Within these Seventy Weeks (Weeks of years) we see the restoration of Jerusalem in a physical sense and its dedication in 405 B.C: and 434 years later we see the crucifixion of Jesus Christ that happened not for himself, but for us to have an opportunity through His death and resurrection to be cleansed, restored and dedicated to Him in this second World Age, the Age of Salvation.
Through believing in the only begotten Son Jesus Christ, we then become citizens of Heavenly Jerusalem which is above, that is eternal.
In this study we can see that the third of the world’s population who are Christians in the middle of Daniel’s shortened Seventieth Week will be completely destroyed by Satan who will appear as the Antichrist, the Abomination of Desolation, the last king of Babylon.
Satan’s deception from the midst of Daniel’s shortened Seventieth week to the end of that Week, is Babylon, and as the Babylon of old destroyed Jerusalem, Satan’s appearance as the last king of Babylon will destroy most of Christianity at and during the latter half of the Five Month Long Hour of Temptation which again is the time span of the Woe of the Sixth Trumpet. They will cease being citizens of the Heavenly Jerusalem, which is above, and will become citizens of Babylon, engulfed in Satan’s confusion.
However, it will be at the Woe of the Seventh Trumpet that will happen at the end of that Seventieth Week (Five Month Long Hour of Temptation) that Babylon, which is Satan’s confusion will be destroyed, and those who are destroyed by that confusion, will have an opportunity to be restored.
Babylon will fall, the Sanctuary will be cleansed, and a restoration will take place.
Through our Lord’s Wrath during the Lord’s Day which is His correction, those who are found desolate will have an opportunity be corrected by His Millennial Teaching’s from a Sanctuary that has been cleansed.
Through our Lords Millennial Teachings, they will also have an opportunity in return, to be cleansed, and dedicated once again to our Lord Jesus Christ at the end of that Day (1000 years) to go into eternity to see a New Heaven and a New Earth, by becoming a part of the New Heavenly Jerusalem that is everlasting.
Seventy Weeks are determined upon THY people and THY Holy City, these Weeks are determined upon them to finish the transgression, to make an end of sins, to make reconciliation for iniquity, to bring in everlasting righteousness, to seal up the vision and prophecy, and to anoint the most Holy.
At the end of these Seventy Weeks the transgression will be finished, and the Sanctuary will be cleansed, so those who are found desolate may be Restored , cleansed and dedicated once again to our Lord who is everlasting, as a city that is everlasting.
Seventy Weeks are determined.