וְאֶת־בִּנְיָמִין֙ אֲחִ֣י יוֹסֵ֔ף לֹא־שָׁלַ֥ח יַעֲקֹ֖ב אֶת־אֶחָ֑יו כִּ֣י אָמַ֔ר פֶּן־יִקְרָאֶ֖נּוּ אָסֽוֹן׃
But Benjamin, Joseph’s brother, Jacob sent not with his brethren; for he said: ‘Lest peradventure harm befall him.’
Rashi on Genesis
פן יקראנו אסון LEST MISCHIEF BEFALL HIM — And at home could not mischief befall him?! Rabbi Eliezer the son of Jacob said: We may infer from this that Satan accuses a man at the time of danger (Midrash Tanchuma, Vayigash 1).
Radak on Genesis
ואת בנימין... אחי יוסף, he is mentioned once more as “Joseph’s brother” as he was the only full brother Joseph had, being a brother both from the same father and the same mother.
Rav Hirsch on Torah
קרא .פן יקראנו אסון verwandt mit קרח ,קרע ,קרה, eine Familie scheinbar disparater Begriffe: Rufen, Treffen, Zerreißen, Frost und Eis. Sie sind jedoch nur Modifikation eines Grundgedankens: