1 John 3:3-7

3And everyone who thus hopes in him purifies himself as he is pure.

4Everyone who makes a practice of sinning also practices lawlessness; sin is lawlessness.

5You know that he appeared in order to take away sins, and in him there is no sin.

6No one who abides in him keeps on sinning; no one who keeps on sinning has either seen him or known him.

7Little children, let no one deceive you. Whoever practices righteousness is righteous, as he is righteous.