"Then you shall again discern between the righteous and the wicked, between one who serves God and one who does not serve Him." Malachi 3.18
Those who
are born of the Spirit are essentially different.
If a person
says he or she is a child of God but their behaviour is not different from
those who live according to the course of this world, they are deceiving
themselves.
Those who
are born of the Spirit bear the image of God Almighty, that is, His character.
The only
way the world will see and know the invisible God is through His children.
As Jesus
said, "Who sees Me sees the Father."