Would you let the fox into the henhouse?
Yehudah's argument to Yosef.
Would you bow to an evil person? The Kabbalistic explanation why Yakov bowed to Eisav seven times. 5783 Vayishlach - וַיִּשְׁלַח ____________________________________ לע"נ שרה...
Do you see angels or people? A lesson in true hospitality.