Little children, it is the last hour; and as you have heard that the Antichrist
is coming, even now many antichrists have come, by which we know that it is the last hour. 1 John 2:18
and every spirit that does not confess that Jesus Christ has come in the flesh is not of God. And this is the
spirit of the Antichrist, which you have heard
was coming, and is now already in the world. 1 John 4:3
Both of these scriptures put the antichrist as coming [future].
Paul teaches a figure who will go to the Temple of God, as Messiah, and deceive many.
Now, brethren, concerning the coming of our Lord Jesus Christ and our gathering together to Him, we ask you, 2 not to be soon shaken in mind or troubled, either by spirit or by word or by letter, as if from us, as though the day of Christ had come. 3 Let no one deceive you by any means;
for that Day will not come unless the falling away comes first, and
the man of sin is revealed, the son of perdition, 4 who opposes and exalts himself above all that is called God or that is worshiped, so that he sits as God in the temple of God, showing himself that he is God. 2 Thessalonians 2:1-4
Man of sin who is revealed by going to the temple, and exalts himself as God in the temple...
- This man of sin, or lawless one will be destroyed personally by Jesus Christ, by the brightness of His coming.
And then the lawless one will be revealed, whom the Lord will consume with the breath of His mouth and
destroy with the brightness of His coming. 2 Thessalonians 2:8
This man of sin, lawless one, son of perdition,
false messiah, which is another way of saying "antichrist" will be alive on earth when Jesus Christ returns.
That certainly makes him a "Future antichrist", as John says... as you have heard that the Antichrist
is coming.
JLB