You must observe the Festival of Matzos. For seven days
you must eat matzos, as I have commanded you, at the
appointed time in the month of the beginning of the
ripening, for in that season you left Egypt. You must
not appear before Me empty-handed.
Ex. 23:15
In the Torah, this festival is usually referred to as “the Festival of Matzos.” Commonly, however, it is called “Passover.” According to Rabbi Levi Yitzchak of Berditchev, this is because G-d – in His book, the Torah – stresses the greatness of His people.
He therefore focuses on the matzos, which we ate because we left Egypt in such haste that there was no time for our dough to rise. Every mention of matzos, therefore, highlights the Jewish people’s great faith and willingness to follow G-d wherever He directed them.
We, in contrast, relate to the holiday as an opportunity to thank G-d. We therefore refer to the holiday as Passover (Pesach), as a reminder of the great miracles that G-d performed for us, particularly when He skipped over (pasach) the Jewish houses and brought His plagues only upon the Egyptians.
We can learn from this phenomenon that what should be paramount in our minds is how kind others have been to us, rather than on how good we have been to them
-- Daily Wisdom Volume 3