וְכִלְכַּלְתִּ֤י אֹֽתְךָ֙ שָׁ֔ם כִּי־ע֛וֹד חָמֵ֥שׁ שָׁנִ֖ים רָעָ֑ב פֶּן־תִּוָּרֵ֛שׁ אַתָּ֥ה וּבֵֽיתְךָ֖ וְכָל־אֲשֶׁר־לָֽךְ׃
흉년이 아직 다섯 해가 있으니 내가 거기서 아버지를 봉양하리이다 아버지와 아버지의 가속과 아버지의 모든 소속이 결핍할까 하나이다 하더라 하소서
Rashi
פן תורש — The Targum renders this by דלמא תתמסכן LEST THOU BE IMPOVERISHED, for the verb is of the same root as we find in (1 Samuel 2:7) “The Lord maketh poor (מוריש) and maketh rich”.
Ramban
LEST THOU COME TO POVERTY, THOU, AND THY HOUSEHOLD. Joseph said this by way of respect for his father. To his brothers he said, For G-d did send me before you to preserve life,39Verse 5 here. and to give you a remnant,40Verse 7 here. but to his father he did not want to say so. Instead, he said, “that if you will delay in the land of Canaan you will be impoverished for I could not send you much food from the royal storehouse as they will suspect me of selling it there in order to accumulate treasures of money and then return to my land and to my birthplace. But when you come here, and they will know that you are my father and brothers, the king will give me permission to sustain you.”
Ibn Ezra
It is like you shall be cut off. And similar [to this is], "to drive out (lehorish) nations" (Deuteronomy 4:38).