Why does the Torah repeat the K'lal of all Matnos Kehunah (See also Pasuk 8)?
Rashi: Because the Parshah of Matnos Kehunah is dear to Hashem, He begins it with a 'K'lal' and ends it with a 'K'lal', placing the details in the middle.
Seforno: "Kol Terumos ha'Kodshim" actually comes to include what the owner separates from the Lachmei Todah, 1 the Shtei ha'Lechem and Chalah.
What is the significance of "B'ris Melach ... "?
Rashi #1: Hashem made a covenant with Aharon, on something that is healthy and that lasts, and that makes other food 'healthy'.
Rashi #2: It means like the covenant that Hashem made with salt - which never goes bad.
Rashi #3 (in Chulin, 133b) and Targum Yonasan: Just as the covenant with salt will never cease, 1 so too, the B'ris with Aharon.
Rashbam: "B'ris Melach ... " means 'a covenant that lasts for generations'.
Targum Yonasan: And salt sweetens the meat of the Korbanos.