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You, my friend, are ill-informed. The idea of the antichrist has deep and complex origins that developed over centuries, blending Jewish apocalyptic expectations, early Christian theology, and later medieval interpretation.
John 2:18 — “Children, it is the last hour; and as you have heard that Antichrist is coming, so now many antichrists have come.”
1 John 4:3 — “This is the spirit of the Antichrist, which you heard was coming and now is in the world already.”
https://en.wikipedia.org/wiki/Antichrist
It's a later addition, does not refer to one individual only and is said to
... may have been generated by the frustration of Jews subject to often-capricious Seleucid or Roman rule, who found the nebulous Jewish idea of a Satan who is more of an opposing angel of God in the heavenly court insufficiently humanised and personalised to be a satisfactory incarnation of evil and threat same source.
If you want scholarly, informed, resources that aren't an ignorant billionaire talking out of his ass, I can provide those. If you aren't interested, kindly stop replying to this thread.
There is quite a lot of nuance here. You can’t just keyword search.
Even if some are rooted in some real person, the stories about them etc. cannot be considered accurate historical accounts.