1)
Why does it say "Lachen? Im Lo"?
1.
Radak: This is a Shevu'ah.
2)
Why is it called "Alasi" (My curse)?
1.
Radak: [Nebuchadnetzar] imposed on him a Shevu'ah in Hashem's name.
3)
Why is it called "Brisi"?
1.
Radak: [Nebuchadnetzar] made a Bris with him in Hashem's name.
4)
What will He put on his head?