3 And every one that has this hope in him purifies himself, even as he is pure.
4 Every one that practises sin practises also lawlessness; and sin is lawlessness.
5 And ye know that he has been manifested that he might take away our sins; and in him sin is not.
6 Whoever abides in him, does not sin: whoever sins, has not seen him or known him.
7 Children, let no man lead you astray; he that practises righteousness is righteous, even as he is righteous.
8 He that practises sin is of the devil; for from the beginning the devil sins. To this end the Son of God has been manifested, that he might undo the works of the devil.
9 Whoever has been begotten of God does not practise sin, because his seed abides in him, and he cannot sin, because he has been begotten of God.