Parshas Bo tells of the last plagues against Egypt, and Yetziat Mitzrayim, the exodus from Egypt. Those three last plagues are Arbeh (locusts), Choshech (darkness), and the culmination of the plagues: Makas Bechoros, the death of the first-born. The parsha also contains many of the rules for the celebration of the Pesach festival. A good portion of those words are included in the Passover Haggadah, and read at the seder. That seder, of course, is a ritual commemorating the exodus of the Hebrews from Egyptian slavery.
As noted, the next to last plague was choshech, darkness. The Torah says that individuals could not see one another for three days. Rashi comments that God brought this particular plague, not only to the Egyptians, but among the Hebrews as well. There were some who did not wish to participate in the exodus from Egypt; God intended to punish them, but he did not want the Egyptians to see their punishment. So these non-believers were "removed" during the plague of choshech.
When the death of the first born came upon the Egyptians, the Torah tells us that a great cry was heard from among the Egyptians. However, the Torah adds, among the Jews, even "a dog did not snarl," (JPS translation of "lo yecheratz kelev leshono") (Shmos 11:7) The rabbis comment that it was as a reward to those dogs for their silence, that the Torah later instructs that when a Jew has meat that may not be eaten because it is unkosher, it should be thrown to the dogs -- "lakelev tashlichoon." (Shmos 22:30)
The Torah says that the exodus from Egypt was to occur "b'etzem ha'yom ha'zeh," "on this very day" (12:51) The rabbis comment that God expected the Egyptians to say, If we see the Jews trying to escape from their slavery, we will prevent them from doing so. So God said: I am bringing the Jews out of Egypt, and we will see whether the Egyptians will be able to prevent me from doing so.
The Torah goes on to say that each individual Jew should tell his or her children that God performed all these wonders "for me." (13:8). In every generation, the rabbis say, Jews should feel that they themselves were freed from slavery. This concept is repeated each year as part of the Pesach seder.
The haftorah (Jeremiah 46:13-28) describes Egypt's eventual destruction. In verse 19, God says, "Equip yourself for exile, daughter of Egypt, for Noph shall become a waste, with no inhabitants."
