1 John 3:3-6

3:3 And everyone who has this hope focused on him purifies himself, just as Jesus is pure).

3:4 Everyone who practices sin also practices lawlessness; indeed, sin is lawlessness. 3:5 And you know that Jesus was revealed to take away sins, and in him there is no sin. 3:6 Everyone who resides in him does not sin; everyone who sins has neither seen him nor known him.