Hashem's eyes take in everything that is done by the children of Israel, His treasured community, holy ones descended from holy ones. He notices all the effort they go to in the eradication of chometz throughout the month of Nissan and in return He scrapes away the plagues brought on by the sitra achra and the accusers, on account of which we must bear the burden of this bitter golus.
(Kav HaYashar #89)