Why does it say "Al Ken"?
Malbim: Because it was not conquered normally, and their demise was so great.
Who said this?
Rashi: Hashem.
Radak: The Navi speaks to the consolers.
What is the meaning of "She'u Mini"?
Rashi: Hashem tells the angels to depart from Him.
Radak: Depart from me; do not console me, for I will embitter my Nefesh with crying.
Why does it say "Amarer ba'Bechi"?
Malbim: Normally, via crying, the Nefesh is calmed from its anger. However, I will embitter myself via crying!
Why does it add "Al Ta'itzu Lenachameni"?
Radak: The matter is repeated in different words. Do not strive to console me for the oppression of my nation; it is too great to be consoled for it.