'Righteously' in the Bible

Since you know that He is righteous, be assured also that the man who habitually acts righteously is a child of His.

Dear children, let no one lead you astray. The man who acts righteously is righteous, just as He is righteous.

By this we can distinguish God's children and the Devil's children: no one who fails to act righteously is a child of God, nor he who does not love his brother man.