Here is the original Bible story of Moses and the flight from Egypt, as told in the book of Exodus:
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Now a certain man of the house of Levi married a Levite woman, who conceived and bore a son. Seeing that he was a goodly child, she hid him for three months. When she could hide him no longer, she took a papyrus basket, daubed it with bitumen and pitch, and putting the child in it, placed it among the reeds on the river bank. His sister stationed herself at a distance to find out what would happen to him. Pharaoh's daughter came down to the river to bathe, while her maids walked along the river bank. Noticing the basket among the reeds, she sent her handmaid to fetch it. On opening it, she looked, and lo, there was a baby boy, crying! She was moved with pity for him and said, "It is one of the Hebrews' children." Then his sister asked Pharaoh's daughter, "Shall I go and call one of the Hebrew women to nurse the child for you?" "Yes, do so," she answered. So the maiden went and called the child's own mother. Pharaoh's daughter said to her, "Take this child and nurse it for me, and I will repay you." The woman therefore took the child and nursed it. When the child grew, she brought him to Pharaoh's daughter, who adopted him as her son and called him Moses; for she said, "I drew him out of the water." On one occasion, after Moses had grown up, when he visited his kinsmen and witnessed their forced labor, he saw an Egyptian striking a Hebrew, one of his own kinsmen. Looking about and seeing no one, he slew the Egyptian and hid him in the sand. The next day he went out again, and now two Hebrews were fighting! So he asked the culprit, "Why are you striking your fellow Hebrew?" But he replied, "Who has appointed you ruler and judge over us? Are you thinking of killing me as you killed the Egyptian?" Then Moses became afraid and thought, "The affair must certainly be known." Pharaoh, too, heard of the affair and sought to put him to death. But Moses fled from him and stayed in the land of Midian. As he was seated there by a well, seven daughters of a priest of Midian came to draw water and fill the troughs to water their father's flock. But some shepherds came and drove them away. Then Moses got up and defended them and watered their flock. When they returned to their father Reuel, he said to them, "How is it you have returned so soon today?" They answered, "An Egyptian saved us from the interference of the shepherds. He even drew water for us and watered the flock!" "Where is the man?" he asked his daughters. "Why did you leave him there? Invite him to have something to eat." Moses agreed to live with him, and the man gave him his daughter Zipporah in marriage. She bore him a son, whom he named Gershom; for he said, "I am a stranger in a foreign land." A long time passed, during which the king of Egypt died. Still the Israelites groaned and cried out because of their slavery. As their cry for release went up to God, he heard their groaning and was mindful of his covenant with Abraham, Isaac and Jacob. He saw the Israelites and knew. . . .
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Meanwhile Moses was tending the flock of his father-in-law Jethro, the priest of Midian. Leading the flock across the desert, he came to Horeb, the mountain of God. There an angel of the LORD appeared to him in fire flaming out of a bush. As he looked on, he was surprised to see that the bush, though on fire, was not consumed. So Moses decided, "I must go over to look at this remarkable sight, and see why the bush is not burned." When the LORD saw him coming over to look at it more closely, God called out to him from the bush, "Moses! Moses!" He answered, "Here I am." God said, "Come no nearer! Remove the sandals from your feet, for the place where you stand is holy ground. I am the God of your father," he continued, "the God of Abraham, the God of Isaac, the God of Jacob." Moses hid his face, for he was afraid to look at God. But the LORD said, "I have witnessed the affliction of my people in Egypt and have heard their cry of complaint against their slave drivers, so I know well what they are suffering. Therefore I have come down to rescue them from the hands of the Egyptians and lead them out of that land into a good and spacious land, a land flowing with milk and honey, the country of the Canaanites, Hittites, Amorites, Perizzites, Hivites and Jebusites. So indeed the cry of the Israelites has reached me, and I have truly noted that the Egyptians are oppressing them. Come, now! I will send you to Pharaoh to lead my people, the Israelites, out of Egypt." But Moses said to God, "Who am I that I should go to Pharaoh and lead the Israelites out of Egypt?" He answered, "I will be with you; and this shall be your proof that it is I who have sent you: when you bring my people out of Egypt, you will worship God on this very mountain." "But," said Moses to God, "when I go to the Israelites and say to them, 'The God of your fathers has sent me to you,' if they ask me, 'What is his name?' what am I to tell them?" God replied, "I am who am." Then he added, "This is what you shall tell the Israelites: I AM sent me to you." God spoke further to Moses, "Thus shall you say to the Israelites: The LORD, the God of your fathers, the God of Abraham, the God of Isaac, the God of Jacob, has sent me to you. "This is my name forever; this is my title for all generations. Go and assemble the elders of the Israelites, and tell them: The LORD, the God of your fathers, the God of Abraham, Isaac and Jacob, has appeared to me and said: I am concerned about you and about the way you are being treated in Egypt; so I have decided to lead you up out of the misery of Egypt into the land of the Canaanites, Hittites, Amorites, Perizzites, Hivites and Jebusites, a land flowing with milk and honey. Thus they will heed your message. Then you and the elders of Israel shall go to the king of Egypt and say to him: The LORD, the God of the Hebrews, has sent us word. Permit us, then, to go a three days' journey in the desert, that we may offer sacrifice to the LORD, our God. Yet I know that the king of Egypt will not allow you to go unless he is forced. I will stretch out my hand, therefore, and smite Egypt by doing all kinds of wondrous deeds there. After that he will send you away. I will even make the Egyptians so well-disposed toward this people that, when you leave, you will not go empty-handed. Every woman shall ask her neighbor and her house guest for silver and gold articles and for clothing to put on your sons and daughters. Thus you will despoil the Egyptians."
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"But," objected Moses, "suppose they will not believe me, nor listen to my plea? For they may say, 'The LORD did not appear to you.'" The LORD therefore asked him, "What is that in your hand?" "A staff," he answered. The LORD then said, "Throw it on the ground." When he threw it on the ground it was changed into a serpent, and Moses shied away from it. "Now, put out your hand," the LORD said to him, "and take hold of its tail." So he put out his hand and laid hold of it, and it became a staff in his hand. "This will take place so that they may believe," he continued, "that the LORD, the God of their fathers, the God of Abraham, the God of Isaac, the God of Jacob, did appear to you." Again the LORD said to him, "Put your hand in your bosom." He put it in his bosom, and when he withdrew it, to his surprise his hand was leprous, like snow. The LORD then said, "Now, put your hand back in your bosom." Moses put his hand back in his bosom, and when he withdrew it, to his surprise it was again like the rest of his body. "If they will not believe you, nor heed the message of the first sign, they should believe the message of the second. And if they will not believe even these two signs, nor heed your plea, take some water from the river and pour it on the dry land. The water you take from the river will become blood on the dry land." Moses, however, said to the LORD, "If you please, LORD, I have never been eloquent, neither in the past, nor recently, nor now that you have spoken to your servant; but I am slow of speech and tongue." The LORD said to him, "Who gives one man speech and makes another deaf and dumb? Or who gives sight to one and makes another blind? Is it not I, the LORD? Go, then! It is I who will assist you in speaking and will teach you what you are to say." Yet he insisted, "If you please, Lord, send someone else!" Then the LORD became angry with Moses and said, "Have you not your brother, Aaron the Levite? I know that he is an eloquent speaker. Besides, he is now on his way to meet you. When he sees you, his heart will be glad. You are to speak to him, then, and put the words in his mouth. I will assist both you and him in speaking and will teach the two of you what you are to do. He shall speak to the people for you: he shall be your spokesman, and you shall be as God to him. Take this staff in your hand; with it you are to perform the signs." After this Moses returned to his father-in-law Jethro and said to him, "Let me go back, please, to my kinsmen in Egypt, to see whether they are still living." Jethro replied, "Go in peace." In Midian the LORD said to Moses, "Go back to Egypt, for all the men who sought your life are dead." So Moses took his wife and his sons, and started back to the land of Egypt, with them riding the ass. The staff of God he carried with him. The LORD said to him, "On your return to Egypt, see that you perform before Pharaoh all the wonders I have put in your power. I will make him obstinate, however, so that he will not let the people go. So you shall say to Pharaoh: Thus says the LORD: Israel is my son, my first-born. Hence I tell you: Let my son go, that he may serve me. If you refuse to let him go, I warn you, I will kill your son, your first-born." On the journey, at a place where they spent the night, the Lord came upon Moses and would have killed him. But Zipporah took a piece of flint and cut off her son's foreskin and, touching his person, she said, "You are a spouse of blood to me." Then God let Moses go. At that time she said, "A spouse of blood," in regard to the circumcision. The LORD said to Aaron, "Go into the desert to meet Moses." So he went, and when they met at the mountain of God, Aaron kissed him. Moses informed him of all the LORD had said in sending him, and of the various signs he had enjoined upon him. Then Moses and Aaron went and assembled all the elders of the Israelites. Aaron told them everything the LORD had said to Moses, and he performed the signs before the people. The people believed, and when they heard that the LORD was concerned about them and had seen their affliction, they bowed down in worship.
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After that, Moses and Aaron went to Pharaoh and said, "Thus says the LORD, the God of Israel: Let my people go, that they may celebrate a feast to me in the desert." Pharaoh answered, "Who is the LORD, that I should heed his plea to let Israel go? I do not know the LORD; even if I did, I would not let Israel go." They replied, "The God of the Hebrews has sent us word. Let us go a three days' journey in the desert, that we may offer sacrifice to the LORD, our God; otherwise he will punish us with pestilence or the sword." The king of Egypt answered them, "What do you mean, Moses and Aaron, by taking the people away from their work? Off to your labor! Look how numerous the people of the land are already," continued Pharaoh, "and yet you would give them rest from their labor!" That very day Pharaoh gave the taskmasters and foremen of the people this order: "You shall no longer supply the people with straw for their brickmaking as you have previously done. Let them go and gather straw themselves! Yet you shall levy upon them the same quota of bricks as they have previously made. Do not reduce it. They are lazy; that is why they are crying, 'Let us go to offer sacrifice to our God.' Increase the work for the men, so that they keep their mind on it and pay no attention to lying words." So the taskmasters and foremen of the people went out and told them, "Thus says Pharaoh: I will not provide you with straw. Go and gather the straw yourselves, wherever you can find it. Yet there must not be the slightest reduction in your work." The people, then, scattered throughout the land of Egypt to gather stubble for straw, while the taskmasters kept driving them on, saying, "Finish your work, the same daily amount as when your straw was supplied." The foremen of the Israelites, whom the taskmasters of Pharaoh had placed over them, were beaten, and were asked, "Why have you not completed your prescribed amount of bricks yesterday and today, as before?" Then the Israelite foremen came and made this appeal to Pharaoh: "Why do you treat your servants in this manner? No straw is supplied to your servants, and still we are told to make bricks. Look how your servants are beaten! It is you who are at fault." Pharaoh answered, "It is just because you are lazy that you keep saying, 'Let us go and offer sacrifice to the LORD.' Off to work, then! Straw shall not be provided for you, but you must still deliver your quota of bricks." The Israelite foremen knew they were in a sorry plight, having been told not to reduce the daily amount of bricks. When, therefore, they left Pharaoh and came upon Moses and Aaron, who were waiting to meet them, they said to them, "The LORD look upon you and judge! You have brought us into bad odor with Pharaoh and his servants and have put a sword in their hands to slay us." Moses again had recourse to the LORD and said, "Lord, why do you treat this people so badly? And why did you send me on such a mission? Ever since I went to Pharaoh to speak in your name, he has maltreated this people of yours, and you have done nothing to rescue them."
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Then the LORD answered Moses, "Now you shall see what I will do to Pharaoh. Forced by my mighty hand, he will send them away; compelled by my outstretched arm, he will drive them from his land." God also said to Moses, "I am the LORD. As God the Almighty I appeared to Abraham, Isaac and Jacob, but my name, LORD, I did not make known to them. I also established my covenant with them, to give them the land of Canaan, the land in which they were living as aliens. And now that I have heard the groaning of the Israelites, whom the Egyptians are treating as slaves, I am mindful of my covenant. Therefore, say to the Israelites: I am the LORD. I will free you from the forced labor of the Egyptians and will deliver you from their slavery. I will rescue you by my outstretched arm and with mighty acts of judgment. I will take you as my own people, and you shall have me as your God. You will know that I, the LORD, am your God when I free you from the labor of the Egyptians and bring you into the land which I swore to give to Abraham, Isaac and Jacob. I will give it to you as your own possession--I, the LORD!" But when Moses told this to the Israelites, they would not listen to him because of their dejection and hard slavery. Then the LORD said to Moses, "Go and tell Pharaoh, king of Egypt, to let the Israelites leave his land." But Moses protested to the LORD, "If the Israelites would not listen to me, how can it be that Pharaoh will listen to me, poor speaker that I am!" Still, the LORD, to bring the Israelites out of Egypt, spoke to Moses and Aaron and gave them his orders regarding both the Israelites and Pharaoh, king of Egypt. These are the heads of the ancestral houses. The sons of Reuben, the first-born of Israel, were Hanoch, Pallu, Hezron and Carmi; these are the clans of Reuben. The sons of Simeon were Jenuel, Jamin, Ohad, Jachin, Zohar and Shaul, who was the son of a Canaanite woman; these are the clans of Simeon. The names of the sons of Levi, in their genealogical order, are Gershon, Kohath and Merari. Levi lived one hundred and thirty-seven years. The sons of Gershon, as heads of clans, were Libni and Shimei. The sons of Kohath were Amram, Izhar, Hebron and Uzziel. Kohath lived one hundred and thirty-three years. The sons of Merari were Mahli and Mushi. These are the clans of Levi in their genealogical order. Amram married his aunt Jochebed, who bore him Aaron, Moses and Miriam. Amram lived one hundred and thirty-seven years. The sons of Izhar were Korah, Nepheg and Zichri. The sons of Uzziel were Mishael, Elzaphan and Sithri. Aaron married Amminadab's daughter, Elisheba, the sister of Nahshon; she bore him Nadab, Abihu, Eleazar and Ithamar. The sons of Korah were Assir, Elkanah and Abiasaph. These are the clans of the Korahites. Aaron's son, Eleazar, married one of Putiel's daughters, who bore him Phinehas. These are the heads of the ancestral clans of the Levites. This is the Aaron and this the Moses to whom the LORD said, "Lead the Israelites from the land of Egypt, company by company." These are the ones who spoke to Pharaoh, king of Egypt, to bring the Israelites out of Egypt--the same Moses and Aaron. On the day the LORD spoke to Moses in Egypt he said, "I am the LORD. Repeat to Pharaoh, king of Egypt, all that I tell you." But Moses protested to the LORD, "Since I am a poor speaker, how can it be that Pharaoh will listen to me?"
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The LORD answered him, "See! I have made you as God to Pharaoh, and Aaron your brother shall act as your prophet. You shall tell him all that I command you. In turn, your brother Aaron shall tell Pharaoh to let the Israelites leave his land. Yet I will make Pharaoh so obstinate that, despite the many signs and wonders that I will work in the land of Egypt, he will not listen to you. Therefore I will lay my hand on Egypt and by great acts of judgment I will bring the hosts of my people, the Israelites, out of the land of Egypt, so that the Egyptians may learn that I am the LORD, as I stretch out my hand against Egypt and lead the Israelites out of their midst." nMoses and Aaron did as the LORD had commanded them. Moses was eighty years old and Aaron eighty-three when they spoke to Pharaoh. The LORD told Moses and Aaron, "If Pharaoh demands that you work a sign or wonder, you shall say to Aaron: Take your staff and throw it down before Pharaoh, and it will be changed into a snake." Then Moses and Aaron went to Pharaoh and did as the LORD had commanded. Aaron threw his staff down before Pharaoh and his servants, and it was changed into a snake.
Pharaoh, in turn, summoned wise men and sorcerers, and they also, the magicians of Egypt, did likewise by their magic arts. Each one threw down his staff, and it was changed into a snake. But Aaron's staff swallowed their staffs. Pharaoh, however, was obstinate and would not listen to them, just as the LORD had foretold. Then the LORD said to Moses, "Pharaoh is obdurate in refusing to let the people go. Tomorrow morning, when he sets out for the water, go and present yourself by the river bank, holding in your hand the staff that turned into a serpent. Say to him: The LORD, the God of the Hebrews, sent me to you with the message: Let my people go to worship me in the desert. But as yet you have not listened. The LORD now says: This is how you shall know that I am the LORD. I will strike the water of the river with the staff I hold, and it shall be changed into blood. The fish in the river shall die, and the river itself shall become so polluted that the Egyptians will be unable to drink its water." The LORD then said to Moses, "Say to Aaron: Take your staff and stretch out your hand over the waters of Egypt--their streams and canals and pools, all their supplies of water--that they may become blood. Throughout the land of Egypt there shall be blood, even in the wooden pails and stone jars." Moses and Aaron did as the LORD had commanded. Aaron raised his staff and struck the waters of the river in full view of Pharaoh and his servants, and all the water of the river was changed into blood. The fish in the river died, and the river itself became so polluted that the Egyptians could not drink its water. There was blood throughout the land of Egypt. But the Egyptian magicians did the same by their magic arts. So Pharaoh remained obstinate and would not listen to Moses and Aaron, just as the LORD had foretold. He turned away and went into his house, with no concern even for this. All the Egyptians had to dig in the neighborhood of the river for drinking water, since they could not drink the river water. Seven days passed after the LORD had struck the river. Then the LORD said to Moses, "Go to Pharaoh and tell him: Thus says the LORD: Let my people go to worship me. If you refuse to let them go, I warn you, I will send a plague of frogs over all your territory. The river will teem with frogs. They will come up into your palace and into your bedroom and onto your bed, into the houses of your servants, too, and your subjects, even into your ovens and your kneading bowls. The frogs will swarm all over you and your subjects and your servants."