“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 lived as strangers. 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 labors of the Egyptians, and I will rescue you from their bondage. I will also redeem you with an outstretched arm, and with great judgments. Then I will take you as 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 labors 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 as a possession; I am the LORD.”’ So Moses said this to the sons of Israel, but they did not listen to Moses on account of their despondency and cruel bondage. …Now it came about on the day when the LORD spoke to Moses in the land of Egypt, that the LORD spoke to Moses, saying, ‘I am the LORD; say to Pharaoh king of Egypt all that I say to you.’ But Moses said before the LORD, ‘Behold, I am unskilled in speech; how then will Pharaoh listen to me?’…Then the LORD said to Moses, ‘See, I have made you as God to Pharaoh, and your brother Aaron shall be your prophet. As for you, you shall speak all that I command you, and your brother Aaron shall speak to Pharaoh that he let the sons of Israel go out of his land. But I will harden Pharaoh’s heart, so that I may multiply My signs and My wonders in the land of Egypt. When Pharaoh does not listen to you, I will lay My hand on Egypt and bring out My armies, My people the sons of Israel, from the land of Egypt by great judgments. Then the Egyptians shall know that I am the LORD, when I extend My hand over Egypt and bring out the sons of Israel from their midst.’ So Moses and Aaron did this; as the Lord commanded them, so they did. And Moses was eighty years old and Aaron eighty-three, when they spoke to Pharaoh” (Exodus 6:1–9, 28–30; 7:1–7 NASB).