1)
Why did he say "[Pen Yitrof
1.
Radak: It is the strongest Chayah, and king over them.
2.
Malbim: He is already taking apart my limbs, and still no one saves!
2)
What is the meaning of "Porek"?
1.
Rashi: This is [remove,] like "Parku Nizmei ha'Zahav" (Shemos 32:2).
2.
Radak: This is [cast off,] like "u'Farakta Ulo" (Bereishis 27:40).
3)
Why did he say "Porek v'Ein Matzil"?
1.
Radak: This shows that he refers to Sha'ul (no human could save him from Sha'ul).