1)
What is the meaning of "vi'Hi Mah"?
1.
Rashi: I am not concerned if there will be no reward.
2.
Radak: What will happen to me will happen; I am not concerned.
3.
Malbim: I will give the good news. Even though I will not be able to answer what the king will ask [about Avshalom], I will tell something (the victory), and be a herald of good.
2)
What is the meaning of "va'Ya'avor Es ha'Kushi"?
1.
Rashi, from Pesachim 7b: He passed, and came in front of him.