1 John 2:4; 1 John 2:22

1 John 2:4

4 He that says, I have known him, and does not keep his commandments, is a liar, and the truth is not in him.

1 John 2:22

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.