Moses and Aaron ask the King of Egypt to free the Israelites

So MOSES AND AARON went to Egypt and gathered all the Israelite leaders together. Aaron told them everything that the LORD had said to Moses, and then Moses performed all the miracles in front of the people. They believed, and when they heard that the LORD had come to them and had seen how they were being treated cruelly, they bowed down and worshipped.
Then Moses and Aaron went to the king of Egypt and said, "The LORD, the God of Israel, says, "Let my people go, so that tey can hold a festival in the desert to honor me'."
"Who is the LORD?" the king demanded. "Why should I listen to him and let Israel go? I do not know the LORD; and I will not let Israel go."
Moses and Aaron replied, "The God of the Hebrews has revealed himself to us. Allow us to travel three days into the desert to offer sacrifices to LORD our God. If we don't do so, he will kill us with disease or by war."
The king said to Moses and Aaron, "What do you mean by making the people neglect their work? Get those slaves back to work! You people have become more numerous than the Egyptians. And now you want to stop working!"
That same day the king commanded the Egyptian slave drivers and the Israelite foremen: "Stop giving the people straw for making bricks. Make them go and find it for themselves. But still require them to make the same number of bricks as before, not one brick less. They don't have enough work to do, and that is why they keep asking me to let them go and offer sacrifices to their God! Make these men work harder and keep them busy, so that they won't have time to listen to a pack of lies ..."
Then the LORD said to Moses, "Now you are going to see what I will do to the king. I will force him to let my people go. In fact, I will force him to drive them out of his land."
God spoke to Moses and said, "I am the LORD. I appeared to abraham, to Isaac, and to Jacob as Almighty God, but I did not make myself known to them by my holy name, the LORD. I also made my covenant with them, promising to give them the land of Canaan, the land in which they ad lived as foreigners. Now I have heard the groaning of the Israelites, whom the Egyptians have enslaved, and I have remembered my covenant. So tell the Israelites that I say to them, "I am the LORD; I will rescue you and set you free from your slavery to the Egyptians. I will raise my mighty arm to bring terrible punishment upon them, and I will save you. I will make you my own people, and I will be your God. You will know that i am the LORD your God when I set you free from slavery in Egypt. I will bring yo to the land that I solemnly promised to give to Abraham, Isaac, and Jacob; and I will give it to you as your own possession. I am the LORD.'..."
Then the LORD said to Moses, "Go and tell the king of Egypt that he must let the Israelites leave his land ..."
The LORD said to Moses and Aaron, "If the king demands that you prove yourselves by performing a miracle, tell Aaron to take his walking stick and throw it down infront of the king, and it will turn into a snake." So Moses and Aaron went to the king and did as the LORD had commanded. Aaron threw his walking stick down in front of the king and his officers, and it turned into a snake. Then the king called for his wise men and magicians, and by their magic they did the same thing. They threw down their walking sticks, and the sticks turned into snakes. But Aaron's stick swallowed theirs. The king, however, remained stubborn and, just as the LORD had said, the king would not listen to Moses an Aaron.