What is the meaning of "Ger v'Soshav"?
Rashi (citing Targum Onkelos) and Targum Yonasan: It means 'a Nochri who sojourns with you'. 1
Da'as Zekenim (Al Derech Derush): Ger alludes to [exile under] Malchus Madai; Toshav alludes to Yavan, and Mishpachas Ger is Romi, which will be uprooted.
Why does the Torah insert the word "Imach"?
Rashi: This implies that the Nochri became rich because he clung to you.
Why does the Torah add the word "Imo"?
Rashi: It implies that he became poor because he clung to the Nochri.
Ramban: 'Your brother became poor because the Ger became wealthy with us'.
QUESTIONS ON RASHI
Rashi writes that Mishpachas Ger is the Nochri family of the Ger Toshav. What does "Eker" mean?
Rashi (from Toras Kohanim): "Eiker" 1 means the Avodah-Zarah, to which he was ultimately sold, in order to serve it - to chop wood and draw water for its service.
Seforno: It means a Nochri who has moved to a country that is far away from yours. 2
Ramban (based on Targum Onkelos): Eker is the root. The Ger Toshav who succeeded among us caused your brother to be sold to his family.
Moshav Zekenim, Ba'al ha'Turim ha'Aruch (based on Targum Onkelos): The Ger Toshav who became rooted among Yisrael caused your brother to be sold to his family.
Refer to 25:47:1:2.