1 John 3:9 (KJV)

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.

He that committeth sin is of the devil; for the devil sinneth from the beginning. For this purpose the Son of God was manifested, that he might destroy the works of the devil.

In this the children of God are manifest, and the children of the devil: whosoever doeth not righteousness is not of God, neither he that loveth not his brother.

For this is the message that ye heard from the beginning, that we should love one another.

Not as Cain, who was of that wicked one, and slew his brother. And wherefore slew he him? Because his own works were evil, and his brother's righteous.

Marvel not, my brethren, if the world hate you.

We know that we have passed from death unto life, because we love the brethren. He that loveth not his brother abideth in death.