How do her teeth resemble "Eder ha'Rechelim"?
Refer to 4:2:1:1, 3 (there it says "Eder ha'Ketzuvos").
Rashi: The officers and Giborim among you, all of them are good. A sheep is totally Kadosh. Its wool is for Techeles, its meat is for a Korban 1 , its horns are for Shofaros, its thigh bones are flutes, its innards are for strings for harps, and its skin is for a drum. Resha'im are compared to dogs; there is no Kedushah from them at all.
Seforno: The teeth (those who fight, e.g. Bnei Chashmonai) are Tzadikim and dear in My eyes like a flock of sheep, that they preserve its wool for Milas (refer to 4:1:4:3 and the note there).
Rechelah is a female, so it cannot be an Olah. It is called a Korban (e.g. Shelamim), for Kohanim eat the meat in Kedushah. (PF)
How are they "Mas'imos"?
Rashi (4:2): This is like Mesom - "Ein Mesom bi'Vsari" (Tehilim 38:4), i.e. complete.
Seforno: In investigation and deeds.
Malbim: Refer to 4:1:4:4.
What do we learn from "v'Shakulah Ein Bahem"?
Refer to 4:2:3:1-4.
