Why is "Chaneni" repeated?
Rashi: Be gracious to me that I not kill, and that I not be killed.
Radak: It is to strengthen the matter, like one who screams; he doubles his words.
Malbim: Help me overcome my Yetzer not to kill Sha'ul in the cave, and that he will not kill me afterwards when he sees me.
What is the grammatical form of "Chasayah"?
Radak: The Yud is in place of Hei (the third letter of the root).
Why does it say "Vecha Chasayah Nafshi" and "uv'Tzel Kenafecha Echseh"?
Malbim: My spiritual Nefesh trusts in Hashem to save it from killing Mashi'ach Hashem. My body trusts in Hashem that it will not be killed. The verse gives a metaphor of a bird hiding its chicks under its wings when an Ayit (vulture, or bird of prey) comes.
What is "Ad Ya'avor Havos"?
Rashi: Until the evil [Radak - that Sha'ul intends to do to me] will pass. Malbim - i.e. Sha'ul and his men will leave.
