What is the meaning of "mi'Bechi Yazer Evkeh Lach"?
Rashi: When this Nevu'ah was said, Yazer was already destroyed. It is close to Mo'av. "Evkeh Lach" - I will cry due to you, similar to that crying [for Yazer], for you will be destroyed like it.
Radak: Other cities 1 of Mo'av, when they hear the crying of Yazer, will [immediately] cry for you, ha'Gefen Sivmah, for they know that it will be [destroyed] like Yazer.
Malbim: [Mo'avim] fled to Yam Yazer, and there the enemy struck them together with Yazer. Therefore, he cries for both of them together
Radak: Yisrael took these cities from the Emori (Sichon), like it says in the Torah (Bamidbar 21:25-26). When Reuven and Gad were exiled, Mo'av returned to dwell in the cities.
Why does it say "ha'Gefen Sivmah"?
Rashi: It was a land of vineyards.
Radak: A vine is a parable for the nation. The enemy will kill some of them, and take some of them to exile 1 .
I.e. some of the branches spread out too much. The owner uproots some of them, and harvests (removes the grapes) from some. (PF)
Why does it say "ha'Gefen", with the prefix Hei? It is Samuch to "Sivmah"!
Radak: This is like "ha'Aretz Kena'an" (Bamidbar 34:2). The word Samuch [to Kena'an, or here, to "Sivmah",] is omitted. It should say ha'Gefen Gefen Sivmah.
Why does it say "Netishosayich"?
Rashi: Because it compared it to a vine, it compared its Giborim to branches that spread out. Radak - they are a metaphor for Goyim.
What is the meaning of "Avru Yam"?
Rashi: They went to exile.
Malbim: Refer to 48:32:1:3.
What are "Keitzech"?
Rashi: It is an expression of Kayitz, i.e. figs, just the Yud is omitted.
Radak: Kayitz are summer fruits, moist or dry. At the time of the harvest, the enemy plundered [them].
