Why does it say "Ya'atzta Boshes l'Veisecha"?
Rashi: In this building, you counseled to remove many nations, and lost yourself.
Radak: In this matter, that you built theft, you counseled shame. When the enemies come, they will destroy the building. It will be shame for you and your seed at that time.
Malbim: In order "Lasum ba'Marom Kino" (9), you counseled shame for yourself, i.e. "Ketzos Amim Rabim v'Chotei" (refer to 2:10:3:2).
What is "Ketzos [Amim Rabim]"?
Rashi: It is an expression of removal and peeling, like "Hiktzos Es ha'Bayis" (Vayikra 14:43).
Radak: You cut off many nations to build your building. Ketzos is Makor (like a gerund). The form with a Dagesh (Pi'el) is "Mekatzeh Raglayim" (Mishlei 26:6).
What is the meaning of "v'Chotei Nafshecha"?
Rashi: This is like "Mis'abero Chotei Nafsho" (Mishlei 20:2) ? he sins to destroy his Nefesh.
Malbim: In addition to many nations, you cut off also one sinner ? yourself!
