1)
What is the significance of "Sareha"?
1.
Radak: It said above (12) that they took bribes in order to murder.
2.
Malbim: They correspond to iron, the strongest metal; it kills people.
2)
What is the comparison to wolves?
1.
Malbim: A wolf is unlike a lion. A lion tears a man only when it is hungry. A wolf tears to spill blood even when it is not hungry. They murdered in order to kill, or to steal the victim's money.
3)
What is "Betzo'a Batza"?
1.
Rashi: It is seizing [others'] money. Radak ? the gerund is mentioned with the verb, to strengthen the matter. The same applies to "Lema'an Tevo'ach Tevach" (21:15), like I explained there.
2.
Malbim: Refer to 22:27:2:1.
