We have an obligation to mention Yetzias Mitrayim every day in the morning and by night. That is one of the reasons why we say Vayomer, the third Parsha of Kriyas Shema in our prayers in the morning and by night.
Rabbi Simcha Zissel Ziv, the Alter of Kelm explains the reason why Chazal instituted it is because Yetzias Mitzrayim has so many fundamental points of our Emunah.
As we are going through the Parshas of Klal Yisrael in Mitzrayim, what they suffered and their redemption, we have the opportunity to study them and see different messages and insights that will strengthen our Emunah and that we will give a reminder on these points every day when we say Shema.
The Passuk in this week's Parsha (Shemos 1-13) say that the Egyptians made the lives of the Klal Yisrael bitter by giving them hard work.
Chazal tell us (Gemarah Sota 11:) that the Egyptians gave the men work that was suitable for women and gave the women work that was suitable for men. That made the work extra hard and bitter.
The question is, what did the Egyptians gain by doing this? They could have only lost out. Every person can be successful when doing what they are good at doing, but making a person do what isn’t suitable for them isn’t a wise direction to success.
Rav Yankel Galinsky explains that Hashem specially made the Egyptians do this to the Jews. The Rambam in a letter to his son explains that Pharaoh the king of Egypt is the Yetzer Harah and we have to study how the Jews were slaves to Pharaoh to understand how the Yetzer Hara is trying to make us his slaves.
The Yetzer Hara tries to stop us serving Hashem. But there are times where the Yetzer Hara realizes that he cannot stop us. We are determined to serve Hashem. Then the Yetzer Hara uses a cruel tact. He tries to convince us that we have a different purpose in life. We should try and copy our friends, our neighbors; to try and be somebody else. That is a very dangerous trap of the Yetzer Hara, to give us full energy to serve Hashem, but in a way which is wrong for us.
Every person has a unique purpose in this world, a purpose that only they can fulfil. A person has to try to work out what their Avodas Hashem is, their unique purpose and goal in life so they can try and fulfil it.
