1 John 2:3-11 (King James Version)

 ³And hereby we do know that we know him, if we keep his commandments.

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

 ⁵But whoso keepeth his word, in him verily is the love of God perfected: hereby know we that we are in him.

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

 ⁷Brethren, I write no new commandment unto you, but an old commandment which ye had from the beginning. The old commandment is the word which ye have heard from the beginning.

 ⁸Again, a new commandment I write unto you, which thing is true in him and in you: because the darkness is past, and the true light now shineth.

 ⁹He that saith he is in the light, and hateth his brother, is in darkness even until now.

 ¹⁰He that loveth his brother abideth in the light, and there is none occasion of stumbling in him.

 ¹¹But he that hateth his brother is in darkness, and walketh in darkness, and knoweth not whither he goeth, because that darkness hath blinded his eyes.