Exodus 6:1-3

ERV(i) 1 And the LORD said unto Moses, Now shalt thou see what I will do to Pharaoh: for by a strong hand shall he let them go, and by a strong hand shall he drive them out of his land. 2 And God spake unto Moses, and said unto him, I am JEHOVAH: 3 and I appeared unto Abraham, unto Isaac, and unto Jacob, as God Almighty, but by my name JEHOVAH I was not known to them.