GEN1067 It is necessary to study in order to know how to act ethically: “An ignoramus cannot be a saintly person” Ethics of the Fathers 2:5.   We need not only to have good intentions but to know the right thing to do.  The Torah describes Lot, Abraham’s nephew, as a generous host who invites two strangers (unbeknownst to him, they re angels) to his home as guests.   … Obviously, the spiritually unaware Lot believed that [offering his daughters to the mob in place of his guests] was what hospitality to one’s guests demanded of him.  TELVOL1:510