known. Hebrew. perceived or understood. The name Jehovah was known as the covenant name; but was not known so as to be understood. The Ellipsis may be better supplied "in [the character of] El Shaddai. " Compare Exodus 7:5.
Related Commentaries of Exodus 6:3
Exodus 6:3
3 And I appeared unto Abraham, unto Isaac, and unto Jacob, by the name of God Almighty, but by my name JEHOVAH was I not known to them.