I never claimed that it did represent losing personal salvation. I have always argued that it is about revelation which enables salvation, not salvation itself.
It is not about "revelation which enables salvation" either! It is about the chosen sphere from which God calls out the promised elect children of Abraham. He promised an elect seed from the very loins of Abraham in addition to the NATIONS OF THE GENTILES. All according to election.
Those "grafted in" are seeing, hearing and understanding
Simply not true! Nowhere does Romans 11 say that - nowhere! Being grafted in did not change their blindness but it is election that obtained sight (Rom. 11:5-7). To be spiritually blind is the natural condition of the fallen nature (Deut. 5:29) whereas to obtain spiritual sight is the supernatural condition of a new heart (Deut. 29:4). You are simply READING INTO the text not only what it denies but what the whole of scripture denies. Romans 8:7-8 (which you have not yet addressed any of may specific points) completely repudiates your interpretation.
If you reject the revelation long enough you grow hardened to it and eventually, if God so chooses, he may cut you off from the revelation all together making you deaf, blind and unable to even understand it anymore.
That is simply not true! The fallen natue is already blind and deaf in regard to SPIRITUAL ability to receive the truth. The NATURAL ability to recognize truth is taken away from the fallen man as he is exposed to light due to the NATURAL reaction of the fallen nature to that light (Jn. 3:19-20; Rom. 8:7-8).
That is NOT a condition from birth, as Total Inability suggests.
It most certainly is and Romans 8:7-8 and John 3:19-20 proves that it is as there are no other options for existence in this world other than "in the flesh" (born of the flesh) and "in the Spirit" (born of the Spirit) and man does not come into this world "in the Spirit" but "in the flesh" and the flesh "CANNOT PLEASE GOD" (Rom. 8:7).
Your position demands a THIRD alternative to being BORN of the flesh other than the second Biblical LATER alternative of being BORN of the Spirit and no such third alternative exists anywhere at anytime on earth.
I challenge you to find one scripture where it teaches that men are born judicially blinded/hardened.
This is a straw man argument because we don't believe any such thing or assert any such thing. We believe that hardening is the natural RESPONSE by the fallen nature to light. Thus, man is not born hardened but born a fallen nature which will always RESPOND to light by hardening just as mud ALWAYS responds to Sunlight by hardening. The nature of the mud determines the reaction and thus man is born with a fallen nature and only WHEN exposed to light it will harden. Hardening is the RESULT/CONSEQUENCE to light whereas the fallen nature is the CAUSE for that hardening.