Why will they not be satiated?
Radak: Because they eat contrary to the law.
Malbim: When the Kohanim were Tzadikim, there was a Brachah in their innards. They were satiated from a small amount of Ishei Hashem, like Chazal said 1 . Now that "Chatas Ami Yochelu" (8), they are not satiated.
Yuma 39a: A Kohen received a k'Zayis from Lechem ha'Panim ? some were satiated from it, and some left over (they were satiated from part of it - PF).
What is the meaning of "Hiznu"?
Malbim: They caused the nation to pursue Zenus 1 .
Radak: Hiznu is Po'el Omed (the action applies only to the subject), like "Hazne Hiznu" (18), "Hizneisa Efrayim" (5:3).
What is the meaning of "v'Lo Yifrotzo"?
Rashi: They will not raise children.
How did they abandon Hashem?
Radak: They abandoned guarding His ways, for they do not desire Him and His ways.
Malbim: In place of Mishmeres Hashem, they guard Zenus and wine (11).
QUESTIONS ON RASHI
Rashi writes that they will not raise children. What is the reason?
Radak: Also lying with women ? since it is Zenus, it will not produce children. If children will result, they will die from the womb (at birth).