1 John 3:8-10

8 The one who practices sin is of the devil, because the devil has been sinning from the beginning. For this [reason] the Son of God was revealed: in order to destroy the works of the devil.

9 Everyone who is fathered by God does not practice sin, because his seed resides in him, and [he is] not able to sin, because he has been fathered by God.

10 By this the children of God and the children of the devil are evident: everyone who does not practice righteousness is not of God, namely, the one who does not love his brother.