In order to convince the Egyptian Pharaoh to free the Israelite slaves, god imposed 10 plagues upon the Egyptians. What was the tenth, and worst of the 10 plagues of Egypt?

After nine previous calamities, from rivers turning to blood to skies dark with locusts, the Egyptian Pharaoh's heart remained hardened against freeing the Israelite slaves. The final, most devastating judgment was designed to break his resolve completely. During the night, a divine force swept through the land of Egypt, taking the life of every firstborn male. This tragedy was indiscriminate in its reach among the Egyptians, affecting everyone from the heir on Pharaoh's throne to the son of the lowliest servant, and even the firstborn of their livestock.

In stark contrast, the Israelites were given specific instructions to protect their families, an event that marks the origin of the Jewish holiday of Passover. Each Israelite household was commanded to sacrifice a lamb and smear its blood on the doorposts of their homes. According to the biblical account in Exodus, when the "angel of death" passed through the land, it would see the blood and "pass over" those houses, sparing the children inside. This act served as a clear sign of divine protection and distinguished the Israelites from the Egyptians.

The immense and sudden grief that struck every Egyptian household finally shattered Pharaoh's stubbornness. Hearing a great cry of anguish rise up from his people, he summoned Moses and Aaron and not only permitted but urged them to take their people and leave Egypt at once. This climactic plague was the direct catalyst for the Exodus, marking the end of centuries of slavery and the beginning of the Israelites' foundational journey to freedom.