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You should consider only what is the Scriptures. Conjectures are add to the scriptures. Forbidden.
yea that’s why I don’t agree with all your explanation there none of it is in scripture it’s all Pure conjecture to understand it one needs to take all the information from Daniel 2 , Daniel 7 , revelation 13 and 17
plus a few more areas but just those offer ot of understanding out the even headed beast and the ten horns and eighth king.
this dream of nebucadnezzar about four kingdoms is what founds the visions later of the four kingdoms and seven kings
Thou, O king, art a king of kings: for the God of heaven hath given thee a kingdom, power, and strength, and glory. And wheresoever the children of men dwell, the beasts of the field and the fowls of the heaven hath he given into thine hand, and hath made thee ruler over them all.
Thou art this head of gold. And after thee shall arise another kingdom inferior to thee, and another third kingdom of brass, which shall bear rule over all the earth.
And the fourth kingdom shall be strong as iron: forasmuch as iron breaketh in pieces and subdueth all things: and as iron that breaketh all these, shall it break in pieces and bruise.”
Daniel 2:37-40 KJV
that leads into this
And four great beasts came up from the sea, diverse one from another. The first was like a lion, and had eagle's wings: I beheld till the wings thereof were plucked, and it was lifted up from the earth, and made stand upon the feet as a man, and a man's heart was given to it.
And behold another beast, a second, like to a bear, and it raised up itself on one side, and it had three ribs in the mouth of it between the teeth of it: and they said thus unto it, Arise, devour much flesh.
After this I beheld, and lo another, like a leopard, which had upon the back of it four wings of a fowl; the beast had also four heads; and dominion was given to it.
After this I saw in the night visions, and behold a fourth beast, dreadful and terrible, and strong exceedingly; and it had great iron teeth: it devoured and brake in pieces, and stamped the residue with the feet of it: and it was diverse from all the beasts that were before it; and it had ten horns.”
Daniel 7:3-7 KJV
and that’s explained further here
These great beasts, which are four, are four kings, which shall arise out of the earth.
Then I would know the truth of the fourth beast, which was diverse from all the others, exceeding dreadful, whose teeth were of iron, and his nails of brass; which devoured, brake in pieces, and stamped the residue with his feet; And of the ten horns that were in his head, and of the other which came up, and before whom three fell;
even of that horn that had eyes, and a mouth that spake very great things, whose look was more stout than his fellows. I beheld, and the same horn made war with the saints, and prevailed against them; Thus he said, The fourth beast shall be the fourth kingdom upon earth, which shall be diverse from all kingdoms, and shall devour the whole earth, and shall tread it down, and break it in pieces.
And the ten horns out of this kingdom are ten kings that shall arise: and another shall rise after them; and he shall be diverse from the first, and he shall subdue three kings. And he shall speak great words against the most High, and shall wear out the saints of the most High, and think to change times and laws: and they shall be given into his hand until a time and times and the dividing of time.”
Daniel 7:17, 19-21, 23-25 KJV
and that holds details for understanding this
And there are seven kings: five are fallen, and one is, ( 6th) and the other is not yet come; ( 7th) and when he cometh, he must continue a short space.
And the beast that was, and is not, even he is the eighth, and is of the seven, and goeth into perdition. And the ten horns which thou sawest are ten kings, which have received no kingdom as yet; but receive power as kings one hour with the beast.”
Revelation 17:10-12 KJV
and this
And I stood upon the sand of the sea, and saw a beast rise up out of the sea, having seven heads and ten horns, and upon his horns ten crowns, and upon his heads the name of blasphemy. And the beast which I saw was like unto a leopard, and his feet were as the feet of a bear, and his mouth as the mouth of a lion: and the dragon gave him his power, and his seat, and great authority. 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. 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. And he opened his mouth in blasphemy against God, to blaspheme his name, and his tabernacle, and them that dwell in heaven. And it was given unto him to make war with the saints, and to overcome them: and power was given him over all kindreds, and tongues, and nations. And all that dwell upon the earth shall worship him, whose names are not written in the book of life of the Lamb slain from the foundation of the world. If any man have an ear, let him hear.”
Revelation 13:1-3, 5-9 KJV
Daniel 2 is where the vision and revelation begins to be shown and throughout scripture it expands in detail
And understanding