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 2:4 In-Context

2 And he is the propitiation for our sins: and not for ours only, but also for the sins of the whole world.
3 And hereby we do know that we know him, if we keep his commandments.
4 He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him.
5 But whoso keepeth his word, in him verily is the love of God perfected: hereby know we that we are in him.
6 He that saith he abideth in him ought himself also so to walk, even as he walked.
The King James Version is in the public domain.