Nothing qualifies, Tammy. That is the point.
If someone had actually spoken with God, been with God, came from God... that person would qualify.
These credentials might not qualify unless that someone was proven to have done these things, mind you. But a person like that would qualify.
That record was written decades after the events it describes by men who were not eyewitness to them. That record, in short, is hearsay, furthermore inconsistent hearsay, that would not stand up as evidence in any true court of examination. Regardless, even if I was to allow that there was one man who understood the mind of God it does not mean that anyone else does, yet so many claim to. What makes it apparent that they are all wrong is that none of them can agree.
I know the records are hearsay and would likely not hold up in a court of law. I am not interested in that though. Sometimes what gets thrown out of court is still real... just not proven 'enough'. It is up to the individual to decide what is 'enough' for them, I suppose.
As for the theologian, I have not read anything by him. Or anyone else for that matter, but for one of CS Lewis' books that was a gift. Theologians are no different than anyone else when it comes to knowing Christ and God. We only need Christ to know God. The Spirit teaches. The rest of us just talking about the bible? We're all subject to the errors in understanding, translation, mistranslation, scribes, etc. So we can only give our best guess at interpretation. We underline our interpretation with love, and we might get close enough that our mistakes don't matter.
Peace,
Tammy