Why does it say "v'Reishis Kol Bikurei Chol"?
Radak: It is the first of all fruits, like the Torah says "Bikurei Kol Asher b'Artzam Asher Yavi'u la'Shem? Yihyeh Lach" (Bamidbar 18:13). "Kol Asher b'Artzam" teaches what is special to their land ? the seven species.
What do we learn from "v'Chol Terumas Kol"?
Radak: This is like it says "Kol Terumas ha'Kodoshim 1 " (Bamidbar 18:19).
E.g. Terumas Lachmei Todah. (PF)
It already said "v'Chol Terumas Kol." What does "mi'Kol Terumoseichem" add?
Radak: Above taught Terumah of Kodshim". Here teaches Terumah Gedolah, which is given to Kohanim.
What is the meaning of "Lehani'ach [Brachah El Beisecha]"?
Rashi: It is to rest, like "va'Yanach b'Chol Gevul Mitzrayim" (Shemos 10:14).
Radak: This is the reason for everything mentioned in this verse. Malbim ? this is like it says "Ish Asher Yiten la'Kohen Lo Yihyeh" (Bamidbar 5:10).