In going over this the last few days, with little or no understanding of the historical text and whatever translations I may be relying on AND in looking at the Thomas text with little understanding of whom the scribes may have been - the Gnostics, I presume - in light of my own direct experiences I would say that following:
Many of the sayings I can agree with, in part, but there's sufficient ambiguity to compel me to think that I may be filling in blanks. This is very unlike what I see in verses 3 and 1.
In my limited understanding, the verse 3 teaching is likely is among the most important teaching, which is why it was front-end loaded, rather than buried in some otherwise random position within the 114-verse text. The 3rd verse, for those who have experienced what it is like to see what I called "heaven on earth," this description validates the 1st verse, in a way that very articulates a clear and self-evident "eternal" truth, which is of such import to the author of Thomas that the same basic message was reinstalled at the back end, and essentially juxtaposed in a first-last manner that is intended to invite this reinforcing association...
(111) Jesus says:
(1) “The heavens will roll up before you, and the earth.
(2) And whoever is living from the living one will not see death.”
(3) Does not Jesus say: “Whoever has found himself, of him the world is not worthy”?
(112) Jesus says:
(1) “Woe to the flesh that depends on the soul.
(2) Woe to the soul that depends on the flesh.”
(1) His disciples said to him: “The kingdom — on what day will it come?”
(2) “It will not come by watching (and waiting for) it.
(3) They will not say: ‘Look, here!’ or ‘Look, there!’
(4) Rather, the kingdom of the Father is spread out upon the earth, and people do not see it.”
The only other passage that would seem to make nearly as clear sense, to me, is 13
(4) Thomas said to him: “Teacher, my mouth cannot bear at all to say whom you are like.”
(5) Jesus said: “I am not your teacher. For you have drunk, you have become intoxicated at the bubbling spring that I have measured out.”
(6) And he took him, (and) withdrew, (and) he said three words to him.
(7) But when Thomas came back to his companions, they asked him: “What did Jesus say to you?”
(8) Thomas said to them: “If I tell you one of the words he said to me, you will pick up stones and throw them at me, and fire will come out of the stones (and) burn you up.”
Keeping in mind that we have precedent, of Jesus taking certain followers aside for certain mystical purposes - the Transfiguration - I see no problem with Jesus doing a different thing with Thomas. If Thomas experienced what I experienced, then he may have had related experiences as well - ones which I believe were timed to occur in ways that command association with my mystical experience that recalls verse 3. In general, I would say that some of these lessons involve having the subject recognize aspects of his or her divinity which could/can be very hard for the general public to believe, including in Israel ca first century AD.
With those considerations in mind I find this passage quite 'real', but I see certain difficulties. For one, was Jesus speaking literally when he said the part about flame throwing? Perhaps that's unlikely, if Jesus never "sinned" because wouldn't that be a lie - maybe, maybe not... Maybe the last line here is literally true, in which case I have nothing to relate to. But if it is figurative, I certainly can, contextually. If my interpretation of what the 3rd verse means is correct, then I would further say that such an experience is very rare.