What has that got to do with understanding moral issues? You don't have to be spiritually alive to understand right from wrong and the need of a Saviour.
Why do you think Jesus spoke of earthly things? You think He was only talking to those who already believed in Him? He expected to be understood so people
could believe in Him.
John 3:12
I have spoken to you of earthly things and you do not believe; how then will you believe if I speak of heavenly things?
You have people saved from death in order to save them from death. Not only is it illogical it becomes impossible for "whosoever" to believe, even if they wanted to, they cannot turn and obey the calling of God the Father. The corruption is in the flesh, not the heart so a person who lives in darkness can still yearn for the light when it is made known to them and the Lord is faithful and true to His Name as
Saviour so that all are made aware of the truth but only those who respond positively are drawn and given to Christ..
God firmly placed the responsibility to believe on our shoulders, that is the one work God requires.
Jn.6:29
It is we who reject God, not the other way round. As far as the Lord is concerned the barrier is removed thanks to Christ's work on the Cross and He has reconciled the world to Himself so that no-one is beyond redemption.
If you weren't so hard of heart you would see it.