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.
Whosoever is born of God doth not commit sin; for his seed remaineth in him: and he cannot sin , because he is born of God.
References for 1 John 3:9
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.