1 John 3:8-10

8 He that practises sin is of the devil; for from [the] beginning the devil sins. To this end the Son of God has been manifested, that he might undo the works of the devil.

9 Whoever has been begotten of God does not practise sin, because his seed abides in him, and he cannot sin, because he has been begotten of God.

10 In this are manifest the children of God and the children of the devil. Whoever does not practise righteousness is not of God, and he who does not love his brother.