Why does the Pasuk omit the title of "Kohen ha'Ma'shi'ach" with regards to the Ha'za'ah of the Par?
Oznayim la'Torah: To teach him that, when performing the Haza'ah ? the main Kaparah of his Korban, he should forget his high position and humble himself as if he was an ordinary Kohen who is serving before Hashem. 1
See Oznayim la'Torah.
Why does the Torah insert the word "ve'Taval ha'Kohen Es Etzba'o"
Zevachim, 40b: To include a strip of loose flesh on his finger, which does not invalidate the sprinkling.
With which forefinger does the Kohen sprinkle the blood?
Sifra: We learn from a Gezeirrah Shavah "Etzba'o" "Etzba'o" from Metzora Vayikra, 14:16, that he sprinkles with his right forefinger. 1
See Torah Temimah, note 20.
Why does the Torah insert the (otherwise superfluous) word "ve'Taval ha'Kohen Es Etzba'o ba'Dam" (See Torah Temimah, note 21)?
Zevahim, 93b: To teach us that, when the Kohen begins to dip his finger into the bowl, it must contain sufficient blood for all seven sprinklings. 1
See Torah Temimah, note 22.
Having mentioned "Kohen ha'Mashi'ach" in the previous Pasuk, why does the Torah add the word "ha'Kohen"?
Kidushin, 36b: To confine the sprinkling of the Par Kohen Gadol to the Kohen Gadol himself.
Why does the Torah refer to the Paroches as "Paroches ha'Kodesh"?
Rashi and Rashbam (on Pasuk 17): To teach the Kohen that he must sprinkle the blood at the point that faces between the poles of the Aron on the other side of the Paroches. 1
Though the blood did not need to touch the Paroches (Rashi).
Why does the Kohen Gadol sprinkle the blood seven times?
Moshav Zekenim: To atone for the "Sheva To'avos Nafsho" (Mishlei 6:16) and to remove from them the curse "Sheva ke'Chatoseichem" (in Bechukosai Bamidbar, 26:21).