Exodus 6:1-9 NIV
Then the LORD said to Moses, “Now you will see what I will do to Pharaoh: Because of my mighty hand he will let them go; because of my mighty hand he will drive them out of his country.”
God also said to Moses, “I am the LORD. I appeared to Abraham, to Isaac and to Jacob as God Almighty, but by my name the LORD I did not make myself fully known to them. I also established my covenant with them to give them the land of Canaan, where they resided as foreigners. Moreover, I have heard the groaning of the Israelites, whom the Egyptians are enslaving, and I have remembered my covenant.
“Therefore, say to the Israelites: ‘I am the LORD, and I will bring you out from under the yoke of the Egyptians. I will free you from being slaves to them, and I will redeem you with an outstretched arm and with mighty acts of judgment. I will take you as my own people, and I will be your God. Then you will know that I am the LORD your God, who brought you out from under the yoke of the Egyptians. And I will bring you to the land I swore with uplifted hand to give to Abraham, to Isaac and to Jacob. I will give it to you as a possession. I am the LORD.’ ”
Moses reported this to the Israelites, but they did not listen to him because of their discouragement and harsh labor.
NIV: New International Version