1 John 2:4; 1 John 2:22

1 John 2:4

4 He who says, "I know him," and doesn't 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? This is the Antichrist, he who denies the Father and the Son.