1)
Why will those who seek to kill him be ashamed?
1.
Radak: They are unable to fulfill their intent.
2.
Radak (40:15): They will see that You are with me, and they have no power to harm me.
2)
Why does it say "Yevoshu" and "v'Yachperu"?
1.
Radak: The matter is repeated in different words to strengthen it.
3)
What is "Yisogu Achor"?
1.
Radak: They will be thwarted from their intents to harm me.
4)
Who are "Chafatzei Ra'asi"?
1.
Malbim (here and 40:15): They hate me in the heart. They do not come to kill me, just they desire my evil.