So what makes you assume that because He had not revealed Himself by that name to Abraham, Isaac, or Jacob, that He had not revealed Himself by that name to anyone else ever? Again the logic just does not follow. Also in Job can you find a place where Job calls Him by that name? No! The name is only used as part of the narrative being re-told later by whoever is doing the telling. No one as far as I know ever claimed Job WROTE the book of Job but apparently Job did not KNOW Elohim by the name YHVH.the HS gave me these verses to give you ..
Then Moses said to God, “Behold, I am going to the sons of Israel, and I will say to them, ‘The God of your fathers has sent me to you.' Now they may say to me, ‘What is His name?' What shall I say to them?”
and I appeared to Abraham, Isaac, and Jacob, as God Almighty, but by My name LORD, I did not make Myself known to them.
the Hebrew says ..
NOT Lord ..
He said, “Naked I came from my mother’s womb, And naked I shall return there. The LORD gave and the LORD has taken away. Blessed be the name of the LORD.”
the last word written is..
so Job knew God's name .. hence post-Torah !!!
The Akkadians (a Semitic group) called the father of the gods (the angels) EA pronounced eeYah, generations before Abram, and the Karen peoples of Burma, from centuries before they ever heard of a Bible have this legend preserved
"Y'wa is eternal, his life is long.
One aeon - he dies not!
Two aeons - he dies not!
He is perfect in meritorious attributes.
Aeons follow aeons - he dies not!"
"Who created the world in the beginning?
Y'wa created the world in the beginning!
Y'wa appointed everything.
Y'wa is unsearchable!"
"The omnipotent is Y'wa; him have we not believed.
Y'wa created men anciently;
He has a perfect knowledge of all things!
Y'wa created men at the beginning;
He knows all things to the present time!
O my children and grandchildren!
The earth is the treading place of the feet of Y'wa.
And heaven is the place where he sits.
He sees all things, and we are manifest to him."
"Y'wa formed the world originally.
He appointed food and drink.
He appointed the "fruit of trial."
He gave detailed order.
Mu-kaw-lee deceived two persons.
He caused them to eat the fruit of the tree of trial.
They obeyed not; they believed not Y'wa ...
When they ate the fruit of trial,
They became subject to sickness, aging, and death ..."
There was one more use of Ywe from Mesopotamia I cannot for the life of me remember but I think these indicate (at least to me) that God may have indicated His name to others also (but did not choose those people fro His greater revelations regarding redemption and so on)