1 John 3:3-10 (New International Version)

³Everyone who has this hope in him purifies himself, just as he is pure.

 ⁴Everyone who sins breaks the law; in fact, sin is lawlessness. ⁵But you know that he appeared so that he might take away our sins. And in him is no sin. ⁶No one who lives in him keeps on sinning. No one who continues to sin has either seen him or known him.

 ⁷Dear children, do not let anyone lead you astray. He who does what is right is righteous, just as he is righteous. ⁸He who does what is sinful is of the devil, because the devil has been sinning from the beginning. The reason the Son of God appeared was to destroy the devil's work. ⁹No one who is born of God will continue to sin, because God's seed remains in him; he cannot go on sinning, because he has been born of God. ¹⁰This is how we know who the children of God are and who the children of the devil are: Anyone who does not do what is right is not a child of God; nor is anyone who does not love his brother.