1)
What is the subject of "Hel'ani"?
1.
Ibn Ezra: The pain. Corresponding to it, he said 'Hashimosa 1 those who mourn over me.'
2.
Malbim: The pain - it forced me to speak.
1
It seems that Ibn Ezra explains Hashimosa to mean 'you astounded.' (PF)
2)
What is "Hashimosa"?
1.
Rashi: It is an expression of silence, like "Eshtomam", "Shumu Shamayim" - be quiet and astounded.
2.
Refer to 16:7:1:1*.
3)
Who is "Kol Adasi"?
1.
Malbim: This is the killing of his children, who were the congregation around him.


