Its less than that, i.e. more narrow. Its a Johanine term for anyone who doesn't believe Jesus is the Messiah. It doesn't refer to one coming bad guy. Its by conflating this term with Paul's "man of sin" that this absurd concept of a singular central "antichrist" was invented. If you want to identify someone talked about in Daniel with Paul's "man of sin" it would be less problematic than first conflating John's plural antichrist with Paul's "man of sin" and then identifying that as being in Daniel.
In 1John2, John was referring to people who were leaving Christianity. He was not speaking about people who had not yet come to belief that Jesus is the messiah. But about people who were Christians, but departed belief in Jesus. There is some more about such persons in Hebrew 6:4-6
John likened those people to the coming Antichrist, by calling them antichrists. A modern day example is on You Tube, an individual who once was a Christian pastor, but who left Christianity to become a Muslim and well known promoter of Israel, denying the deity of Jesus. You can look up videos the person posts, Yusuf Estes.
Here's the verse that John was talking about Christians who left Christianity.
1John2:19 They went out from us, but they were not of us; for
if they had been of us, they would no doubt have continued with us: but
they went out, that they might be made manifest that they were not all of us.
You can also read about these kind of persons in Luke 8:13-14.
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david, it is not just man of sin in 2Thessalonians2:3-4. But the
revealed man of sin, son of perdition.
The person when he commits the act of going into the temple, sitting, claiming to be God, does so when he has been in the role of being the King of Israel, the Antichrist, for around 3 years. The Jews during that time thinking he is the messiah and that they are living in the early stages of the messianic age of peace and safety. The reason for them saying "peace and safety" in 1Thessalonians5.
It will come as a great shock to them, and they will immediately disown the person. The act of betrayal to the Jews and the Mt. Sinai covenant, is in similitude to Judas betraying Jesus. Which Judas was likewise called the son of perdition. (I am not saying the person is Judas, btw).
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There can only be one actual coming Antichrist. Because the person has to be anointed the King of Israel in order to become the Antichrist.
Are you aware that there have only be 3 kings over united Israel ? And that each of them were anointed King by a prophet?
Saul and David, by Samuel. Solomon, by Nathan.
Which for that reason, the Jews (Judaism) expect the messiah to be anointed the King of Israel by a known prophet... as they have told me.
Since they anticipate Elijah to come before the beginning of the messianic age, it would make sense that the known prophet to anoint the messiah would be Elijah.
Which points to the false prophet in Revelation 13, which it would appear to claim to be Elijah. But really is not. And it will be the false prophet who anoints the person as the King of Israel, making the person the Antichrist.