1 John 4:3

And every spirit that does not confess that Jesus Christ, is come in flesh is not of God: and this is that spirit of antichrist, of which ye have heard that it should come, and that now it is already in the world.

1 John 2:18

Little children, it is the last hour, and as ye have heard that the antichrist comes, likewise there are also beginning to be many antichrists, by which we know that it is the last time.

1 John 2:22

Who is a liar but he that denies that Jesus is the Christ? This same is antichrist, who denies the Father and the Son.

2 John 1:7

For many deceivers are entered into the world, who do not confess Jesus Christ coming in flesh. This same is a deceiver and antichrist.

2 Thessalonians 2:3-8

Let no one deceive you by any means: for that day shall not come except there come a falling away first and that man of sin be revealed, the son of perdition,

Treasury of Scripture Knowledge

Summary

1 John 4:3

And every spirit that confesseth not that Jesus Christ is come in the flesh is not of God: and this is that spirit of antichrist, whereof ye have heard that it should come; and even now already is it in the world.

And this

1 John 2:18

2 Thessalonians 2:7

2 John 1:7

General references

Deuteronomy 18:21

John 8:47

Bible References

And this

Little children, it is the last hour, and as ye have heard that the antichrist comes, likewise there are also beginning to be many antichrists, by which we know that it is the last time.

For the mystery of iniquity is already working, except that he who dominates now will dominate until he is taken out of the way.

For many deceivers are entered into the world, who do not confess Jesus Christ coming in flesh. This same is a deceiver and antichrist.

General references

And if thou say in thine heart, How shall we know the word which the LORD has not spoken?

He that is of God hears God's words; ye therefore hear them not because ye are not of God.