My little children, these things I write to you, that you may not sin. But if any man sin, we have an advocate with the Father, Jesus Christ the just.
And he is the propitiation for our sins: and not for ours only, but also for those of the whole world.
And by this we know that we have known him, if we keep his commandments.
He who saith that he knoweth him and keepeth not his commandments is a liar: and the truth is not in him.
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.
He that saith he abideth in him ought himself also to walk even as he walked.
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.
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.
He that saith he is in the light and hateth his brother is in darkness even until now.