1 John 2:4; 1 John 2:22

1 John 2:4

4 He that says, I know him, and does not keep his commandments, is a liar, and the truth is not in him;

1 John 2:22

22 Who is the liar but he who denies that Jesus is the Christ? *He* is the antichrist who denies the Father and the Son.