This final great plague upon the Egyptians led them to exclaim 'we be all dead men.' Thus, since the plagues had virtually ruined Egypt's economy, and now death was striking the people they wanted to be rid of these Israelites and that as quickly as possible. Since the first born was struck down Amenhotep II's firstborn son did not ascend the throne. It seems clear that Thutmose IV who ascended the throne after this was not the firstborn as would normally have been the case.
29And it came to pass, that at midnight the LORD smote all the firstborn in the land of Egypt, from the firstborn of Pharaoh that sat on his throne unto the firstborn of the captive that was in the dungeon; and all the firstborn of cattle. 30And Pharaoh rose up in the night, he, and all his servants, and all the Egyptians; and there was a great cry in Egypt; for there was not a house where there was not one dead. 31And he called for Moses and Aaron by night, and said, Rise up, and get you forth from among my people, both ye and the children of Israel; and go, serve the LORD, as ye have said. 32Also take your flocks and your herds, as ye have said, and be gone; and bless me also. 33And the Egyptians were urgent upon the people, that they might send them out of the land in haste; for they said, We be all dead men.
Because the Pharaoh got tired of the Hebrew God messing with his heart.. ; Exodus 4:21 : And the LORD said unto Moses, When thou goest to return into Egypt, see that thou do all those wonders before Pharaoh, which I have put in thine hand: but I will harden his heart, that he shall not let the people go. ; Exodus 7:3 : And I will harden Pharaoh's heart, and multiply my signs and my wonders in the land of Egypt. ; Exodus 7:13 : And he hardened Pharaoh's heart, that he hearkened not unto them; as the LORD had said. ; Exodus 9:12 : And the LORD hardened the heart of Pharaoh, and he hearkened not unto them; as the LORD had spoken unto Moses. ; Exodus 10:1 : And the LORD said unto Moses, Go in unto Pharaoh: for I have hardened his heart, and the heart of his servants, that I might shew these my signs before him: ; Exodus 10:20 : But the LORD hardened Pharaoh's heart, so that he would not let the children of Israel go. ; Exodus 10:27 : But the LORD hardened Pharaoh's heart, and he would not let them go. ; Exodus 11:10 : And Moses and Aaron did all these wonders before Pharaoh: and the LORD hardened Pharaoh's heart, so that he would not let the children of Israel go out of his land. ; Exodus 14:4 : And I will harden Pharaoh's heart, that he shall follow after them; and I will be honoured upon Pharaoh, and upon all his host; that the Egyptians may know that I am the LORD. ; Exodus 14:8 : And the LORD hardened the heart of Pharaoh king of Egypt, and he pursued after the children of Israel ; Exodus 14:17 : I will harden the hearts of the Egyptians, and they shall follow them: and I will get me honour.
The ten plagues of Egypt-
1. Water to Blood
2. Frogs
3. Gnats or Lice
4. Flies
5. Livestock Diseased
6. Boils
7. Thunder and Hail
8. Locusts
9. Darkness
10. Death of the Firstborn
It is hard to explain why the Pharaoh would have needed to chase after the Israelites, since he knew that they were heading towards Egyptian territory in Canaan. He only needed to send word to his troops and garrisons in the Levant, for them to intercept and capture the Israelites. The entire Levant was under total Egyptian military control throughout the period attributed to the Exodus and long afterwards.
Hundreds of years later, when the time the Book of Exodus was written, the authors simply did not realise that the Egyptians had once been masters of the territory they now occupied.
The Torah answers this question: the numerous plagues were sent in order to demonstrate God's closeness to the Israelites (Exodus 6:6-7), and to reveal His greatness to them (10:1-2). They also served to humiliate the stubborn Pharaoh repeatedly, so that he would know Who it was whom he had flouted (Exodus 7:17).
If the story of the plagues were true, God would never have needed to send ten plagues, when the pharaoh was so ready to free the Israelites after only two plagues - the river of blood and the plague of frogs (Exodus 8:8). Each time, God hardened the king's heart so that he would not free the Hebrew people. It seems from the biblical account that God was doing this not to help the Israelites but to have fun at the expense of the Egyptians. Moreover, if God could have hardened the Pharaoh's heart, he could also have softened his heart, so that he would let the people go and with his blessing.
The story of the plagues is not true, because the biblical Exodus never really happened according to almost all scholars. This leads us to the real reason the Book of Exodus described so many plagues, each one more terrible than the one before. The people of Israel enjoyed a story in which their supposed enemies suffered terrible hardships. Just as the Canaanites supposedly would suffer in perpetuity for the sin of Ham (Genesis 9:2,25-27), so they needed the Egyptians to suffer grievously for their enslavement of the Israelites. The ten plagues were part of the story's entertainment value.
Answer 2
Within the narrative, God tells Moses that these plagues are to remind the Israelites of God and his power. The destruction and humiliation of the Egyptians was to be proof of this might.
The tenth plague, much more so than all the earlier plagues, devastated the land of Egypt. Pharaoh's own firstborn son died (Exodus 12:29), and every Egyptian household had someone die (ibid 12:30). The entire land of Egypt cried out (ibid).
In addition, at this point God removed the stubbornness which He had placed on Pharaoh's heart as a punishment for having ignored the first several plagues (when he had still had free-will).
God wanted Pharaoh to release the Jewish people so that He can establish a generation of people who will obey and served. And it was from this generation that the word of God will spread. God also did this because He had plans for them which was the promise land
The Israelites were living under severe bondage in Egypt in the time of Moses, and they cried out to God. Exodus 2:24 And God heard their groaning, and God remembered his covenant with Abraham, with Isaac, and with Jacob. God then came to deliver His people to fulfill his covenant.
Pharaoh let the Jews out after the tenth plaque , the death of the first born in Egypt. that did not have the blood mark on the door.
According the Old Testament, Pharaoh finally allowed the Hebrews to leave Egypt after the Tenth Plague: Death of all Firstborn Egyptians.
It was darkness , but Pharaoh only allowed the people to go after the tenth plaque.
the Egyptian Pharaoh
God instructed Moses to go to Pharaoh and demand the release of the Israelites from slavery in Egypt. He was to tell Pharaoh, "Let my people go, so that they may worship me in the wilderness."
Pharaoh heart was hardened , so he would not let the Israelites free.
This is due to the fact that the plagues were specifically addressed against the Egyptians. It was the Egyptian Pharaoh who was refusing to let the Israelites go.
In the Old Testament book of Exodus: Exo 9:7 Then Pharaoh sent, and indeed, not even one of the livestock of the Israelites was dead. But the heart of Pharaoh became hard, and he did not let the people go.
He answered them more than once (Exodus ch.5 to 11), but the gist of all the answers was that he refused to free the Israelites. (Sometimes he spoke of his own volition, not as an answer, and did proclaim the Israelites' emancipation, but in each case [except ch.12] he soon retracted.)
God turned Moses' rod into a serpent during the encounter at the burning bush, as a sign of His power to perform miracles. This event is described in the Book of Exodus in the Bible.
God sent the 10 plagues in Egypt because the Pharaoh wouldn't obey God's message through Moses to let the Israelites leave slavery. Pharaoh said he would after every plague to get rid of them, but changed his mind. After the last plague, involving Pharaoh's son to die, he finally gave in and the Israelites escaped Egypt.
He hardened his heart and refused to let the Israelites go (Exodus ch.8). See also:More about the Exodus
B/c of the ten plagues, but then he changed his mind and chased after the isrealites but was killed in the red sea when God dropped the waters on his army.