This is something to consider when we try to identify the antichrist: he is a man with a
fierce countenance.
What are the other things in the Bible we should look out for?

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Dan 7:8 I considered the horns, and, behold, there came up among them another little horn, before whom there were three of the first horns plucked up by the roots: and, behold, in this horn were eyes like the eyes of man, and a mouth speaking great things.
He will have the eyes of man which his agenda is it is all about people and there is no God.
And he will push that agenda.
Dan 7:20 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.
Stout
rab
(Chaldee); corresponding to H7227: - captain, chief, great, lord, master, stout.
He will be more adamant and determined to be in position of power and does not waiver more than those in league with him.
Dan 8:23 And in the latter time of their kingdom, when the transgressors are come to the full, a king of fierce countenance, and understanding dark sentences, shall stand up.
Dan 8:24 And his power shall be mighty, but not by his own power: and he shall destroy wonderfully, and shall prosper, and practise, and shall destroy the mighty and the holy people.
Dan 8:25 And through his policy also he shall cause craft to prosper in his hand.
He will be fierce in his agenda and pushy and dominant.
He will understand dark sentences speaking like no man they ever heard before mesmerizing them.
Joh 7:32 The Pharisees heard that the people murmured such things concerning him; and the Pharisees and the chief priests sent officers to take him.
Joh 7:45 Then came the officers to the chief priests and Pharisees; and they said unto them, Why have ye not brought him?
Joh 7:46 The officers answered, Never man spake like this man.
The officers were afraid to take Jesus because of the way He spoke.
Which Jesus spoke to people like no person they ever heard but on the side of good.
The antichrist will speak like no person that people ever heard before but on the side of evil.
He will cause craft to prosper in his hand.
Craft.
mirmâh
meer-maw'
From H7411 in the sense of deceiving; fraud: - craft, deceit (-ful, -fully), false, feigned, guile, subtilly, treachery.
Dan 11:36 And the king shall do according to his will; and he shall exalt himself, and magnify himself above every god, and shall speak marvellous things against the God of gods, and shall prosper till the indignation be accomplished: for that that is determined shall be done.
Dan 11:37 Neither shall he regard the God of his fathers, nor the desire of women, nor regard any god: for he shall magnify himself above all.
Dan 11:38 But in his estate shall he honour the God of forces: and a god whom his fathers knew not shall he honour with gold, and silver, and with precious stones, and pleasant things.
2Th 2:4 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.
He will claim to be God the most exalted human to ever exist.
He will exalt himself above every god and above all people.
He will be of the occult.
He will not have the desire of women because his only agenda is to be trained in the occult being focused and ruling the world.
He will become the biggest player on the world scene for 3.5 years pushing his agenda.
And then claim to be God.
For the 3.5 years before he claims to be God it will be easy to identify the man of sin working in the world by his behavior, popularity, not caring about family life, and the beliefs he has of no God, people will evolve to be spiritual, the occult, and talking like no person they heard before, and the stern strict aggression he has.
He will stick out like a sore thumb.
For sure he has people going along with his agenda and beliefs.
But he is the man of sin influenced by Satan so his determination will be higher and more dominant to push that agenda.
He will be all over the place, busy as can be to influence, and persuade, with great determination.
For the influence of Satan will cause him to be like that but with that comes great arrogance of a high level to be the greatest ever and rule the world.
Not afraid to push it, not afraid of failing believing for sure he will exceed.
For Satan is tweaking his mind to be like that.
And these things are trapped in his mind with no other reality or choice and no escape.
No second guessing, no doubt, no remorse for he believes it has to be done, no other way, the will of nature.
He will be the worse human being in history being controlled by Satan to deceive and destroy.
Which by peace he will destroy many convincing the world it is the only way to have peace.
1Ti 4:1 Now the Spirit speaketh expressly, that in the latter times some shall depart from the faith, giving heed to seducing spirits, and doctrines of devils;
1Ti 4:2 Speaking lies in hypocrisy; having their conscience seared with a hot iron.
2Ti 4:2 Preach the word; be instant in season, out of season; reprove, rebuke, exhort with all longsuffering and doctrine.
2Ti 4:3 For the time will come when they will not endure sound doctrine; but after their own lusts shall they heap to themselves teachers, having itching ears;
2Ti 4:4 And they shall turn away their ears from the truth, and shall be turned unto fables.
His religion is all religions are of the occult and the same.
Which he will push a false interpretation of the Bible that exalts people and there is no God.
Which will be the time people will not want to hear the truth of the Bible.
For they stopped the preaching of the truth and only the false interpretation is allowed becoming popular and they are giving heed to the antichrist and his reality.
The reason the antichrist is shown in Daniel is because it has to do with the end time.