1 John 2:3-6

3 And by this we may know that we know Him--if we obey His commands.

4 He who professes to know Him, and yet does not obey His commands, is a liar, and the truth has no place in his heart.

5 But whoever obeys His Message, in him love for God has in very deed reached perfection. By this we can know that we are in Him.

6 The man who professes to be continuing in Him is himself also bound to live as He lived.