Exodus 6:3-5 NIV

[3] 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. [4] I also established my covenant with them to give them the land of Canaan, where they resided as foreigners. [5] Moreover, I have heard the groaning of the Israelites, whom the Egyptians are enslaving, and I have remembered my covenant.