What is "Ge Gevul"?
Targum Yonasan: This is the border. Rashi ? Zeh Gevul (the Gimel is in place of a Zayin 1 ), like "u'Nsaticha l'Vag la'Goyim" (25:7) is like l'Vaz 2 .
Rashi: Ge is like Gai (a canyon).
Malbim: Ge is an expression of "v'Lo Yigheh Mikem Mazor" (Hoshe'a 5:13), i.e. He will widen the border from where it was before.
What do we learn from "li'Shnei Asar Shivtei Yisrael"?
Malbim: This is a promise that all 12 Shevatim will be found; no Shevet will be lost 1 at the time of great dispersion.
What is the meaning of "Yosef Havalim"?
Rashi, Targum Yonasan: Yosef will receive two portions ? one for Menasheh, and one for Efrayim. Radak ? this is like initially.
Malbim: They will be more than they were before, so He will give to them more than they received the first time; the borders of the land will widen.