Why did the Levi'im not receive a portion in Eretz Yisrael?
Rashi and Ramban: Because, since they are designated for the service of the Mizbe'ach
(to assist the Kohanim
in their service
Ramban: Because whatever was performed in the Beis ha'Mikdash was for the sake of the Korbanos.
What does "Cheilek ve'Nachalah" come to include?
Rashi (in Parshas Shoftim) It comes to include 'Keini, Kenizi and Kadmon'.
What does the Torah mean when it writes "Hashem Hu Nachalaso"?
Rashi: They receive a designated portion
from 'the house of the King.
Targum Onkelos and Targum Yonasan: It means that the Matanos that Hashem gives them is their portion.
Da'as Zekenim: I.e. Ma'aser, and cities to live in (Hadar Zekenim and Rosh).