1 John 2:4; 1 John 2:22

1 John 2:4

4 The one who says, "I have come to 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 the one who denies that Jesus is the Christ? This is the antichrist, the one who denies the Father and the Son.