Matthew 24:23-25

Then if any man shall say unto you, Lo, here is Christ, or there; believe it not.
For there shall arise false Christs, and false prophets, and shall shew great signs and wonders; insomuch that, if it were possible, they shall deceive the very elect.
Behold, I have told you before. - Matthew 24:23-25

Jesus warns that many (not one) antichrists would rise. These are not the main antichrist but are termed "saviours" , they deliver people from afflictions, though not having the backing of heaven. These are ministers of unrighteousness parading themselves as ministers of righteousness.
Jesus warns, 'stay away from them '.
Why? The next verse.