1)
Why does it say "veha'Nose'im ba'Sevel Omesim"?
1.
Ibn Ezra: Omesim is extra Perush.
2.
Malbim: Omes is what others load on him. Nosei is also what he picks up by himself. Because each held a weapon in one hand, he could not load himself.
2)
What is "Shelach"?
1.
Rashi: It is a weapon, like "me'Avor ba'Shelach." Also Menachem explained so.
2.
Ibn Ezra: It is a sword.
3.
Malbim (12): It is a sword that both of its edges are sharp; it is used to stab. One does not put it in a scabbard; he holds it in his hand, like a spear.
