Then the LORD said to Moses, "Now you shall see what I will do to Pharaoh; for under compulsion he will let them go, and under compulsion he will drive them out of his land."
God spoke further to Moses and said to him, "I am the LORD; and I appeared to Abraham, Isaac, and Jacob, as God Almighty, but by My name, LORD, I did not make Myself known to them. I also established My covenant with them, to give them the land of Canaan, the land in which they sojourned. Furthermore I have heard the groaning of the sons of Israel, because the Egyptians are holding them in bondage, and I have remembered My covenant. Say, therefore, to the sons of Israel, 'I am the LORD, and I will bring you out from under the burdens of the Egyptians, and I will deliver you from their bondage. I will also redeem you with an outstretched arm and with great judgments. Then I will take you for My people, and I will be your God; and you shall know that I am the LORD your God, who brought you out from under the burdens of the Egyptians. I will bring you to the land which I swore to give to Abraham, Isaac, and Jacob, and I will give it to you for a possession; I am the LORD.'" So Moses spoke thus to the sons of Israel, but they did not listen to Moses on account of their despondency and cruel bondage.
Now the LORD spoke to Moses, saying, "Go, tell Pharaoh king of Egypt to let the sons of Israel go out of his land." But Moses spoke before the LORD, saying, "Behold, the sons of Israel have not listened to me; how then will Pharaoh listen to me, for I am unskilled in speech?" Then the LORD spoke to Moses and to Aaron, and gave them a charge to the sons of Israel and to Pharaoh king of Egypt, to bring the sons of Israel out of the land of Egypt.