1)
What are the implications of "ve'ha'Ish asher Ya'aseh be'Zadon"?
1.
Sanhedrin, 86b: It implies that the Zakein Mamrei is not Chayav unless he follows his argument by issuing a ruling that contradicts the ruling of the Beis-Din ha'Gadol. 1
1
See Torah Temimah, note 63.
2)
What are the implicsations of "Levilti Shemo'a el ha'Kohen"?
1.
Sifri: It implies that he heard the ruling from the Beis-Din themselves and not from a Shali'ach - in which case he would not become a Zakein Mamrei. 1
1
See Torah Temimah, note 64.
3)
Why does the Torah insert the (otherwise superfluous) word "ha'Omeid Leshareis Sham"?