1 John 2:22

Who is the real liar? who but he who denies that Jesus is the Christ? This is 'antichrist,' he who disowns the Father and the Son.

2 John 1:7

I say this, because a number of impostors have emerged in the world, men who will not acknowledge the coming of Jesus Christ in the flesh; that marks the real 'impostor' and 'antichrist.'

1 John 4:3

and every spirit which does not confess Jesus [incarnate] does not come from God. This latter is the spirit of antichrist; you were told it was coming, and here it is already in the world.

1 John 2:18

Children, it is the last hour. You have learned that 'Antichrist is coming.' Well, but many antichrists have appeared ??which makes us sure it is the last hour.

John 8:44

You belong to your father the devil, and you want to do what your father desires; he was a slayer of men from the very beginning, and he has no place in the truth because there is no truth in him: when he tells a lie, he is expressing his own nature, for he is a liar and the father of lies.

1 Corinthians 12:2-3

You know when you were pagans, how your impulses led you to dumb idols;

1 John 1:6

If we say, 'We have fellowship with him,' when we live and move in darkness, then we are lying, we are not practising the truth;

1 John 2:4

He who says, 'I know him,' but does not obey his commands, is a liar and the truth is not in him;

1 John 2:23

No one who disowns the Son can possess the Father: he who confesses the Son possesses the Father as well.

1 John 4:20

If anyone declares, 'I love God,' and yet hates his brother, he is a liar; for he who will not love his brother whom he has seen, cannot possibly love the God whom he has never seen.

Jude 1:4

for certain persons have slipped in by stealth (their doom has been predicted long ago), impious creatures who pervert the grace of our God into immorality and disown our sole liege and Lord, Jesus Christ.

Revelation 3:9

Lo, I will make those who belong to that synagogue of Satan, who style themselves Jews (no Jews are they, but liars!) ??lo, I will have them come and do homage before your feet and learn that I did love you.

Treasury of Scripture Knowledge

Summary

Who is a liar but he that denieth that Jesus is the Christ? He is antichrist, that denieth the Father and the Son.

He is

Bible References

Who

1 John 2:4
He who says, 'I know him,' but does not obey his commands, is a liar and the truth is not in him;
1 John 1:6
If we say, 'We have fellowship with him,' when we live and move in darkness, then we are lying, we are not practising the truth;
1 John 4:20
If anyone declares, 'I love God,' and yet hates his brother, he is a liar; for he who will not love his brother whom he has seen, cannot possibly love the God whom he has never seen.
John 8:44
You belong to your father the devil, and you want to do what your father desires; he was a slayer of men from the very beginning, and he has no place in the truth because there is no truth in him: when he tells a lie, he is expressing his own nature, for he is a liar and the father of lies.
Revelation 3:9
Lo, I will make those who belong to that synagogue of Satan, who style themselves Jews (no Jews are they, but liars!) ??lo, I will have them come and do homage before your feet and learn that I did love you.

He that

1 John 2:23
No one who disowns the Son can possess the Father: he who confesses the Son possesses the Father as well.
1 John 4:3
and every spirit which does not confess Jesus [incarnate] does not come from God. This latter is the spirit of antichrist; you were told it was coming, and here it is already in the world.
1 Corinthians 12:2
You know when you were pagans, how your impulses led you to dumb idols;
2 John 1:7
I say this, because a number of impostors have emerged in the world, men who will not acknowledge the coming of Jesus Christ in the flesh; that marks the real 'impostor' and 'antichrist.'
Jude 1:4
for certain persons have slipped in by stealth (their doom has been predicted long ago), impious creatures who pervert the grace of our God into immorality and disown our sole liege and Lord, Jesus Christ.

He is

1 John 2:18
Children, it is the last hour. You have learned that 'Antichrist is coming.' Well, but many antichrists have appeared ??which makes us sure it is the last hour.