1 John 2:3-6

3 And hereby we 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 hath the love of God been perfected. Hereby we know that we are in him:

6 he that saith he abideth in him ought himself also to walk even as he walked.