Deu 13:6-18. Without regard to nearness of relation.
If thy brother ... entice thee secretly - This term being applied very loosely in all Eastern countries (Gen 20:13), other expressions are added to intimate that no degree of kindred, however intimate, should be allowed to screen an enticer to idolatry, to conceal his crime, or protect his person. Piety and duty must overcome affection or compassion, and an accusation must be lodged before a magistrate.