1)
What is "Iter Yad Yemino"?
1.
Rashi: They were [lefties]; their right hand was [unskilled], as of it was closed off. This is like "v'Al Tetar Alai Be'er Piha." (Tehilim 69:16).
2)
Who is "Kol Zeh"?
1.
Rashi: It is the 700 men.
3)
What is the meaning of "v'Lo Yachati"?
1.
Rashi, Targum Yonasan: He does not err (miss).