In the final plague, the first born of any coupling was killed. That meant that a family could have more than one son die if the couple were unfaithful. This shows that there are not secrets from God.

When the story of the Exodus begins Pharaoh makes it clear that he does not respect the Jewish slaves. At the end he does, but only after the Jews learn to respect themselves.

The first commandment that the Jew are given as a people is to declare the new month. This is to emphasize that they no longer are slaves but control their time. Also, that with freedom comes responsibility.

God commands the Jews to put the blood of the lamb on their door posts. He says so that there will be not mistake who is Jewish and who is Egyptian. The real reason is to teach the Jews to stand up to their oppressors as Jews. To be proud Jews.

The Plague of Darkness showed that the Egypt was a place of darkness, both morally and spiritually, while the Torah would lead the Jews to true enlightenment.

The Plague of Locusts destroyed what little was left of the Egyptian economy. For the Egyptians it meant that they were meaningless since they considered their wealth as everything. For us, while net worth is important, our souls are more so.

God reveals that the purpose of taking the Jews out of slavery was to make them into a holy nation. And they become holy by their behavior. That redeeming the Jews from slavery was more than giving them freedom.

The ultimate punishment of Pharaoh was that his free will was taken away. This makes him no more than an animal which operates by instinct but has no free will.

Even though there was more than enough evidence that God was running the show, the Egyptians refused to see the obvious evidence. They thought it was all a trick, until it was too late.

Pharaoh was regarded as a god in Egypt. One of the main purposes of the plagues was to show that he was a mere mortal and only human. According to the Torah, only God is God.