Moses
Deuteronomy 13:6BSB·traditional attribution

If your very own brother, or your son or daughter, or the wife you embrace, or your closest friend secretly entices you, saying, “Let us go and worship other gods” (which neither you nor your fathers have known,

John Calvin Reformed @genevareformer

6 If thy brother, the son of thy mother. The punishment which he had commanded to be inflicted on false teachers, is now extended to each one of the people. For although it is a lighter offense in a private individual to draw others with him into error, both because his ignorance is excusable, and the profession of a teacher does not increase his responsibility...

Matthew Henry Presbyterian @wholebiblehenry

Further provision is made by this branch of the statute against receiving the infection of idolatry from those that are near and dear to us. I. It is the policy of the tempter to send his solicitations by the hand of those whom we love, whom we least suspect of any ill design upon us, and whom we are desirous to please and apt to conform ourselves to.

Commenting on Deuteronomy 13:6-11

John Gill Reformed Baptist @doctorgill

If thy brother, the son of thy mother,.... A brother by mother's side, which is generally supposed to be the nearest relation, at least most out of question, so more liable to be regarded as being beloved: or thy son, or thy daughter, or the wife of thy bosom; most dearly beloved by him, as indeed each of these relations are by a man, there...