The Bible warns against the activities of deceivers and false prophets who arose during the first century, and continues to warn against their activities during the "last days". Here are a few relevant Bible verses:
But every inspired statement [every spirit] that does not acknowledge [confess] Jesus [is not from God] does not originate with God. Furthermore, this is the [spirit of the ] antichrist's inspired statement that you have heard was coming, and now it is already in the world (1 John 4:3 Revised New World Translation)
For many deceivers have gone out into the world, those not acknowledging Jesus Christ as coming in the flesh. This is the deceiver and the antichrist. (2 John 1:7 (Revised New World Translation)
Let no one seduce you in any manner, because it will not come [the day of Jehovah] unless the apostasy comes first and the man of lawlessness gets revealed, the son of destruction. He is set in opposition and lifts himself up over everyone who is called "god" or an object of reverence, so that he sits down in the temple of The God, publicly showing himself to be a god. (2 Thessalonians 2:3-4 New World Translation 2006)
Has the man of lawlessness, the son of destruction and the antichrist been revealed yet? What is "the temple of The God" in 2 Thessalonians 2:4? What activities today identify the antichrist in these, the "last days" leading up to the tribulation prior to "the day of Jehovah"?
What is the official view of Jehovah's Witnesses regarding the antichrist?