There were 10 plagues in total: blood, frogs, lice, wild beasts, diseases, boils, hail, locusts, darkness, and the most severe of all, the death of every Egyptian first-born son. In order to protect the Israelite children from the Angel of Death, the Israelites marked their doors with lamb’s blood, so that their houses would be passed over (hence the holiday name, “Passover”). With every plague, Pharaoh hardened his heart more and more. But with that final, fatal blow, Pharaoh surrendered and ordered the Israelites to leave Egypt.


haggadah Section: -- Ten Plagues
Source: "For this they brought us out of Egypt?" Dave Barry, Alan Zweibel, Adam Mansbach+https://reformjudaism.org/