1 John 2:4; 1 John 2:22

1 John 2:4

4 He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him;

1 John 2:22

22 Who is the liar but he that denieth that Jesus is the Christ? This is the antichrist, [even] he that denieth the Father and the Son.