"Everyone who keeps on sinning is practicing lawlessness — because Sin IS lawlessness. And you know why Jesus appeared: to take away sins. There is no sin in him. No one who stays connected to him keeps on sinning as a way of life. No one whose life is defined by ongoing sin has truly seen him or known him.
Don't let anyone fool you on this. The person who practices righteousness is righteous, just as Jesus is righteous. The person who makes a practice of sinning belongs to the devil — because the devil has been sinning since the very beginning.
Here's why the Son of God appeared: to destroy everything the devil has built. No one born of God makes sin their pattern of life, because God's seed lives in them. They can't keep living that way — because they've been born of God.
This is how you can tell the difference between the children of God and the children of the devil: whoever doesn't practice righteousness isn't from God — and neither is anyone who doesn't love their brother or sister."