1 John 3:3-7

And every man that hath this hope in him purifieth himself, even as he is pure.

Whosoever committeth sin transgresseth also the law: for sin is the transgression of the law.

And ye know that he was manifested to take away our sins; and in him is no sin.

Whosoever abideth in him sinneth not: whosoever sinneth hath not seen him, neither known him.

Little children, let no man deceive you: he that doeth righteousness is righteous, even as he is righteous.