Why did he say "Im Banecha Chat'u Lo"?
Malbim (3): Iyov's children died - we cannot say that they were punished to increase their reward! (NOTE: Perhaps this was to increase their reward in the world to come! - PF) Surely they sinned - he himself said "Ulai Chat'u Vanai" (1:5).
Why did he say "va'Yshalchem b'Yad Pish'am"?
Rashi: They were sent via their sin - it was a Shali'ach to bring them.
Devar Eliyahu: Sometimes one is trapped due to a small sin at a time of anger, due to his previous sins. Surely your children Chat'u (a small sin) now, and were sent due to Pish'am (great sins) in the past.
Malbim (3): They were punished while sinning. They cursed Hashem while eating and drinking - that is when the house collapsed on them. This is Midah k'Neged Midah and Tzedek. You say that you are a Tzadik.
