1 John 2:3-6

3 And in this we do know that we have known him if we keep his commandments.

4 He that says, I have known him, and does not keep his commandments, is a liar, and the truth is not in him.

5 But whosoever keeps his word, in him verily is the charity of God perfected: hereby know we that we are in him.

6 He that says he abides in him ought himself also so to walk, even as he walked.