Well, KML, you repeat a common belief that scripture does not reveal anyone who has seen hell and lived to talk about it.

Here is the best example

It is from King David, he is upset that the wicked prosper until he goes into the temple and prays about it at verse 17

He is then given a vision of exactly what happens

He knew scripture before, but God made it much more real to him

Psalm 73

The Tragedy of the Wicked, and the Blessedness of Trust in God

1 Truly God is good to Israel,
To such as are pure in heart.
² But as for me, my feet had almost stumbled;
My steps had nearly slipped.
³ For I was envious of the boastful,
When I saw the prosperity of the wicked......

¹⁷ Until I went into the sanctuary of God;
Then I understood their end.

¹⁸ Surely You set them in slippery places;
You cast them down to destruction.
¹⁹ Oh, how they are brought to desolation, as in a moment!
They are utterly consumed with terrors.
²⁰ As a dream when one awakes,
So, Lord, when You awake,
You shall despise their image.

²¹ Thus my heart was grieved,
And I was vexed in my mind.
²² I was so foolish and ignorant;
I was like a beast before You.
²³ Nevertheless I am continually with You;
You hold me by my right hand.
²⁴ You will guide me with Your counsel,
And afterward receive me to glory

You see KML, God has revealed the reality of Hell to many people, not just David. I am one of them

As a new Christian God gave me a quick dream about heaven shortly after I decided to read the bible because I wanted to try to read it with an open mind, God blessed my with a dream that reassured me of what I was reading. However I could not understand hell, it seemed to cruel to believe. So one night I asked God. "If hell is real send me there, so I can warn people.

He sent me there. Little did I know that very few would believe me.They thought I might be crazy. But you know who the most difficult to reach about this is? It is some Christians. They can't seem to fathom that God deals with us all in many different ways. So too with the gifts of the Holy Spirit. We cripple ourselves with our stubberness and unbelief.