Why did he say "Zechar Na"?
Malbim: You say that a Tzadik is destroyed without Mishpat; due to this, you deny Hashgachah. You must clarify this from experience, that so happened to many Tzadikim!
Why does it mention "Naki" and "Yesharim"?
Devar Eliyahu: Naki is to Shamayim. Yesharim is to people, in business. We asked "Tzadik Ki Tov" - are there Tzadikim who are not good?! A good Tzadik is good to Hashem and people. If he is good to Hashem but bad to people, he is not a good Tzadik. His reward is only in the world to come, but not in this world. A good Tzadik "Pri Ma'aleleihem Yochelu." A Naki is not lost from Olam ha'Ba. Yesharim are good also to people - where are they lost from both of these [worlds]?!
Why did he say "Mi" and "Eifo"?
Malbim: If you cannot name one Tzadik who was destroyed without Mishpat, for you forgot his name, can you tell the place where so happened?
What is "Nichchadu"?
Rashi: They were hidden and lost, like "va'Tikached Min ha'Aretz."
Ibn Ezra: They were cut off, like "va'Tikached Min ha'Aretz."
