3. And by this we know that we have known him, if we keep his commandments.
4. He who saith that he knoweth him, and keepeth not his commandments, is a liar, and the truth is not in him.
5. But he that keepeth his word, in him in very deed the charity of God is perfected; and by this we know that we are in him.
6. He that saith he abideth in him, ought himself also to walk, even as he walked.
7. Dearly beloved, I write not a new commandment to you, but an old commandment which you had from the beginning. The old commandment is the word which you have heard.
8. Again a new commandment I write unto you, which thing is true both in him and in you; because the darkness is passed, and the true light now shineth.
9. He that saith he is in the light, and hateth his brother, is in darkness even until now.
10. He that loveth his brother, abideth in the light, and there is no scandal in him.
11. But he that hateth his brother, is in darkness, and walketh in darkness, and knoweth not whither he goeth; because the darkness hath blinded his eyes.
12. I write unto you, little children, because your sins are forgiven you for his name's sake.
13. I write unto you, fathers, because you have known him, who is from the beginning. I write unto you, young men, because you have overcome the wicked one.