My boy asked me a tricky question I was unable to answer - please help. He just returned from a trip to Rome and went through the airport security checking the bags reading the Parashat Shavua (Miketz 42) about checking the bags.
The brothers were frightened by the fact that their own money was secretly returned to their luggage:
"וַיִּפְתַּח הָאֶחָד אֶת־שַׂקּוֹ לָתֵת מִסְפּוֹא לַחֲמֹרוֹ בַּמָּלוֹן וַיַּרְא אֶת־כַּסְפּוֹ וְהִנֵּה־הוּא בְּפִי אַמְתַּחְתּוֹ׃
וַיֹּאמֶר אֶל־אֶחָיו הוּשַׁב כַּסְפִּי וְגַם הִנֵּה בְאַמְתַּחְתִּי וַיֵּצֵא לִבָּם וַיֶּחֶרְדוּ אִישׁ אֶל־אָחִיו לֵאמֹר מַה־זֹּאת עָשָׂה אֱלֹקים לָנוּ
How come they didn't learn from that and didn't check the bags the second time they left Yossef and let Binyomin keep the cup?