If there come any unto you, and bring not this doctrine, receive him not into your house, neither bid him God speed:
Ver. 10. And bring not this doctrine] If he hold not the foundation, but be found heterodox and heretical.
Receive him not, &c.] Illam domum in qua fuerit inventus haereticus diruendam decernimus, Down with that house that harbours a heretic, said the Council of Tholouse in their constitution against the Albigenses, whom they mistook for heretics.
Neither bid him God speed] Show not love where you owe nothing but hatred. "I hate every false way," saith David. And I shall look upon Auxentius as upon a devil, as long as he is an Arian, said Hilarius. St John sprang out of the bath wherein Cerinthus the heretic was washing, and said, Let us be gone, lest the house fall on our heads.