6  If we say that we have fellowship with him, and walk in darkness, we lie, and do not practise the truth. 7  But if we walk in the light as he is in the light, we have fellowship with one another, and the blood of Jesus Christ his Son cleanses us from all sin.

8  If we say that we have no sin, we deceive ourselves, and the truth is not in us. 9  If we confess our sins, he is faithful and righteous to forgive us our sins, and cleanse us from all unrighteousness. 10  If we say that we have not sinned, we make him a liar, and his word is not in us.

Chapter 2

1  My children, these things I write to you in order that ye may not sin; and if any one sin, we have a patron with the Father, Jesus Christ the righteous; 2  and he is the propitiation for our sins; but not for ours alone, but also for the whole world.

3  And hereby we know that we know him, if we keep his commandments. 4  He that says, I know him, and does not keep his commandments, is a liar, and the truth is not in him; 5  but whoever keeps his word, in him verily the love of God is perfected. Hereby we know that we are in him. 6  He that says he abides in him ought, even as he walked, himself also so to walk.

7  Beloved, I write no new commandment to you, but an old commandment, which ye have had from the beginning. The old commandment is the word which ye heard. 8  Again, I write a new commandment to you, which thing is true in him and in you, because the darkness is passing and the true light already shines. 9  He who says he is in the light, and hates his brother, is in the darkness until now. 10  He that loves his brother abides in light, and there is no occasion of stumbling in him. 11  But he that hates his brother is in the darkness, and walks in the darkness, and knows not where he goes, because the darkness has blinded his eyes.