What is the meaning of "li'Rkamos Tuval la'Melech"?
Rashi: They bring embroidered garments to the king for a gift from the entire land - "v'Hevi'u Es Kol Acheichem mi'Kol ha'Goyim Minchah
What is the meaning of "Besulos Achereha Re'oseha"?
Rashi: They will go after them - "v'Hecheziku bi'Chnaf Ish Yehudi Leimor Nelechah Imachem Ki Shamanu Elokim Imachem" (Zecharyah 8:23).
Radak: These are the friends of each princess.
Radak (16): "Besulos" is like "Besulos Bas Yehudah" (Eichah 1:15). Just like Besulos, no man 'knew' them, so the nations did not know Torah and Chok; they will accept from Melech ha'Mashi'ach the laws of Yisrael, or at least the seven Mitzvos [of Bnei Noach].
Malbim: They are the friends of the Kalah.
Malbim (Derech ha'Muskal): They are all powers of the Nefesh.
To whom does it say "Muva'os Lach"?
Rashi: This is said to Hashem.
Radak: It is said to the king. Malbim - she and her friends are for him; her friends will be concubines.
Malbim (Derech ha'Muskal): All powers of the Nefesh will obey the intellect and do its service, even though they are Besulos who were not yet conquered (under a husband).