The Antichrists, many, that are here for over two thousand years are shown as those who teach we do need a man to teach us.Because the antichrist (singular) Satan who has no form he uses it to his advantage to deny the work of Christ.
Little children, it is the last time: and as ye have heard that antichrist shall come, even now are there many antichrists; whereby we know that it is the last time.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.1Jo 2:19
The warning of his motive of operation a few verses below.
1These things have I written unto you concerning them that seduce you.But the anointing which ye have received of him abideth in you, and ye need not that any man teach you: but as the same anointing teacheth you of all things, and is truth, and is no lie, and even as it hath taught you, ye shall abide in him.Jo 2:26
A good example of that kind of seducing teem work, knowing Satan has no form is shown in an example in Mathew 16:
From that time forth began Jesus to shew unto his disciples, how that he must go unto Jerusalem, and suffer many things of the elders and chief priests and scribes, and be killed, and be raised again the third day.Then Peter took him, and began to rebuke him, saying, Be it far from thee, Lord: this shall not be unto thee.But he turned, and said unto Peter, "Get thee behind me, "Satan": thou art an offence unto me: for thou savourest not the things that be of God, but those that be of men. Then said Jesus unto his disciples, If any man will come after me, let him deny himself, and take up his cross, and follow me.Mat 16:21
No distinction between the things of men and those of God offends our God, just as it is written.(thou art an offence unto me)
Because Christ cannot deny he paid the wages of Peters sin in full ,he was reinstated over an over every time he denied Christ. Those who know not Christ will be sent a strong delusion so that they can continue to believe the lie.
It is a faithful saying: For if we be dead with him, we shall also live with him: If we suffer, we shall also reign with him: if we deny him, he also will deny us: If we believe not, yet he abideth faithful: he cannot deny himself.2Ti 2:11