Massah as the Bread
According to Aharon ben-Eliyahu (Sefer Keter Torah): Scholars have given many different opinions as to why
massah is considered
the bread of poverty/affliction. Some say that this means literally the bread of
the poorest people, because this is the bread they have most often. Others say that
it means bread that is injurious to the digestive system. Still others say
that it is bread suitable for the hardships of travel, since the miqra'
speaks of hardship in connection with travel as in, "He subjected my strength
to hardship on the road" (Tehilim 102.24). This is confirmed by the words
following the command to eat unleavened bread, "for in haste you came out
of the land of Egypt" (Devarim 16.3).