opposer's of the Truth are antichrist !
Notice one of the characteristics paul gives of this Antichrist:
2 thess 2:
4Who 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.
earlier we defined the word opposeth as the greek word
antikeimai
Now this word is made up of two other greek root words anti which means over against and keimai which means:
to lie
a) of an infant
b) of one buried
c) of things that quietly cover some spot
1) of a city situated on a hill
d) of things put or set in any place, in ref. to which we often use "to stand"
1) of vessels, of a throne, of the site of a city, of grain and other things laid up together, of a foundation
metaph.
a) to be (by God's intent) set, i.e. destined, appointed
b) of laws, to be made, laid down
c) lies in the power of the evil one, i.e. is held in subjection by the devil
This opposing is appointed by God, destined and purposed by God and it lies in the power of the evil one the devil..
This is when God loosed Satan for that appointed time in the end to deceive the Nations rev 20:
3And cast him into the bottomless pit, and shut him up, and set a seal upon him, that he should deceive the nations no more, till the thousand years should be fulfilled: and after that he must be loosed a little season
7And when the thousand years are expired, Satan shall be loosed out of his prison,
8And shall go out to deceive the nations which are in the four quarters of the earth, Gog, and Magog, to gather them together to battle: the number of whom is as the sand of the sea.
So this is the appointed time that God will send false religion a strong delusion by the activity of Satan deceiving the false church with false gospels and teachings. notice 2 thess 2:
10And with all deceivableness of unrighteousness in them that perish; because they received not the love of the truth, that they might be saved.
11And for this cause God shall send them strong delusion, that they should believe a lie:
12That they all might be damned who believed not the truth, but had pleasure in unrighteousness.
Again, this Man of Sin, the Antichrist is not one individual but many Just as the Man of God in 2 tim 3:17
That the man of God may be perfect, thoroughly furnished unto all good works.
This does not refer to one Individual, but all the Teachers of God..
So the Man of sin applies to all the False teachers of Satan, His ministers 2 cor 11:
14And no marvel; for Satan himself is transformed into an angel of light.
15Therefore it is no great thing if his ministers also be transformed as the ministers of righteousness; whose end shall be according to their works.