What do we learn from "Asher Koneihen Yahargun"?
Malbim: They are unlike flock destined to be shorn or to raise children ? one does not kill them.
Who will not be guilty?
Rashi: The Nochri kings, that I will exile Yisrael among them. This one sells them, and the buyer kills, and it does not cross his mind that there is guilt in this.
Malbim: The buyer thinks that he is not guilty, for these are destined for slaughter and killing (refer to 11:5:1:1).
What do we learn from "u'Mochereihen Yomar Baruch Hashem va'Shir"?
Rashi: The seller boasts, Baruch Hashem that He put them in My hand, and I became rich [via selling them]. Radak ? it says Yomar, for each seller says so. He says Baruch Hashem, for he thinks that Hashem desires this. So Sancheriv said "hami'Baladei Hashem Alisi Al ha'Aretz ha'Zos v'Hashchisah" (Yeshayah 36:10). Alternatively, people normally praise Hashem for every gain they get, whether virtuous or via evil. Chazal said, a thief calls to Hashem at the opening of the tunnel [that he digs to break into a house to steal ? Brachos 60a].
Malbim: Flocks destined to be shorn or to raise children, the owner gets rich via keeping them. Those destined to be slaughtered, he gets rich via selling them.
Why does it say "v'Ro'eihem Lo Yachmol Aleihen"?
Radak: Hashem, who is their shepherd, does not have mercy on them. Therefore, they fall to their enemies ? sellers and buyers. Ro'eihem is plural (for Elokim is plural), like "Yismach Yisrael b'Osav" (Tehilim 149:2), "Aye Eloka Osai" (Iyov 35:10).
Malbim: Also the shepherds do not have mercy on them, for they are destined to be slaughtered.