For me the whole thing started at a very young age, in a manner that I imagine was not dissimilar to the process that led Thomas Jefferson to his Jefferson Bible: just plain being bothered by the sense that there was too much redacting of the sayings of Jesus and too much editiorializing going on, and I always wanted to hear him without the clutter. What was the unadulterated voice like? I was made aware very early that particularly since the time of the enlightenment many serious theologians had begun asking such such questions (o.a. Radikalkritik). So many years later it became clear to me that the Thomas Gospel was the single clearest means history has now given us for cleaning up these misunderstandings. In the process of writing my book I became aware of lots of materials that is available today, some of which might have pulled the book into another direction entirely, and lose focus. So there are always things you can't cover. The purpose of this site however is definitely (among other things), to provide a home for some explorations which might have been too detailed for the book.
One fascinating piece of research in this category was by Prof. Stevan Davies, and his main site on the Thomas gospel is available through the link of his name here, and the piece that caught my attention was an extensive analysis of his of how, in the transition from Thomas to Mark, the sayings were combined, and given a context, which set up the whole process of viewing Jesus a certain very specific way, namely the Christian way, as it was then beginning to emerge. The greatest influence in which was the theological influence of Paul. I want to discuss some of his findings here, not from a formal scholarly standpoint, for that I'll refer you to his original article, but from the point of view of the content, as we might understand it today based on A Course in Miracles. I will provide the links to the material, will avoid the detailed discussion, which invariably will boil down to the difference between choosing the ego or the Holy Spirit, since that is the only meaningful choice ever. I will simply expand on his comments with an eye to how you might look at the material from a Course standpoint.
In general terms then, it may pay to recap here something about the issue of level confusion as the Course sees it, which is really the psychological mechanism which the mind uses to defend against the teachings of Jesus, while conversesly the miracle is Jesus's way to undo the level confusion. And, as the Course makes abudantly clear, coming and going we have the need to defend ourselves againt his teachings of a Kingdom not of this world, since we prefer our own little kingdom which is very much of this world, for the very good reason that here we get to be the boss. So level confusion is in effect the ego's way of reinterpreting Jesus's sayings on the level where it operates, the body and the world, and as a result it now gets to tell Jesus what it is he means, rather than the other way around. It's a simple case of the ego telling him to play by its rules, or not at all, for the simple reason that it's the ego's ball.
After we kill him, we feel guilty, but then we turn around and we then sugar coat it by making an idol out of him, and creating a religion in his name, which acts essentially as a justification of the ego. The way the truth is preserved in spite of all the world's violence directed at him is exactly because he does not defend himself, since he knows that he is not his body. Here is one of the key passages from the Course:
Since you cannot not teach, your salvation lies in teaching the exact opposite of everything the ego believes. This is how you will learn the truth that will set you free, and will keep you free as others learn it of you. The only way to have peace is to teach peace. By teaching peace you must learn it yourself, because you cannot teach what you still dissociate. Only thus can you win back the knowledge that you threw away. An idea that you share you must have. It awakens in your mind through the conviction of teaching it. Everything you teach you are learning. Teach only love, and learn that love is yours and you are love. (ACIM:T-6.III.4)
That is why you must teach only one lesson. If you are to be conflict-free yourself, you must learn only from the Holy Spirit and teach only by Him. You are only love, but when you deny this, you make what you are something you must learn to remember. I said before that the message of the crucifixion was, "Teach only love, for that is what you are." This is the one lesson that is perfectly unified, because it is the only lesson that is one. Only by teaching it can you learn it. "As you teach so will you learn." If that is true, and it is true indeed, do not forget that what you teach is teaching you. And what you project or extend you believe. (ACIM:T-6.III.2)
In other words the only way to be consistent is to choose for oneness, is to choose for Love, since if there's oneness, there cannot be conflict, so teaching anything else creates conflict. The simple fact that remains is that truth is true, and everything else is a lie. Thus the way Jesus teaches--he did then, and he does now--is that it's all on the mind level, he asks us to follow him to his Kingdom which is not of this earth. Or to paraphrase that, here in this world, everything is dualistic, and therefore conflict ridden, for the world arises from a thought of conflict, which is the thought that I could be separate from God. So as long as we take the world and the body as our point of departure in our life, and our thinking, we have conflict built in, and the consequence are in accord with that. If we follow Jesus, we take spirit as our point of departure, on which level their cannot be conflict, since everything is one. This is why the Course constantly urges us that the answer is not in dragging Jesus into our messes, and making them good and real, but rather that we should take the illusion to the truth, and turn to Jesus or the Holy Spirit for help, which entails returning to the mind, and joining the solution instead of making the problem real and thus preventing the solution.
The Atonement does not make holy. You were created holy. It merely brings unholiness to holiness; or what you made to what you are. Bringing illusion to truth, or the ego to God, is the Holy Spirit's only function. Keep not your making from your Father, for hiding it has cost you knowledge of Him and of yourself. The knowledge is safe, but where is your safety apart from it? The making of time to take the place of timelessness lay in the decision to be not as you are. Thus truth was made past, and the present was dedicated to illusion. And the past, too, was changed and interposed between what always was and now. The past that you remember never was, and represents only the denial of what always was. (ACIM:T-14.IX.1)
So, as with Jesus before Pontius Pilate, to the world it's the other way around, as is explained here:
Much of the ego's strange behavior is directly attributable to its definition of guilt. To the ego, the guiltless are guilty. Those who do not attack are its "enemies" because, by not valuing its interpretation of salvation, they are in an excellent position to let it go. They have approached the darkest and deepest cornerstone in the ego's foundation, and while the ego can withstand your raising all else to question, it guards this one secret with its life, for its existence depends on keeping this secret. So it is this secret that we must look upon, for the ego cannot protect you against truth, and in its presence the ego is dispelled. (ACIM:T-13.II.4)
So this is the point also why Jesus's message is never lost, never mind how badly we mangle it. It also explains why across the ages people have found their way to him at all times, in spite of religious beliefs that sometimes seem to make hit harder, for his message never dies. That is its exact point, that is the resurrection. He taught to the seeming end that he was in the world but not of it, that he was spirit, not his body, and the final expression of that was to experience the crucifixion of his body, knowing full well that he was not his body. Thus the inner peace he demonstrated is the appeal to the heart, to value only truth, and no words, no theology can undo that message, since it is beyond words. It is the living reminder that his reality of Love (the Kingdom), is ultimately preferable to the substitute reality of the ego, in which we stubbornly believe we are the role we play, even after the play is over. The choice in the end is simply between disssociating the role, and remembering who we are in truth, as spirit, or justifying the role as our only reality and thus continuing the murder of Christ, or the crucifixion, as the Course usually refers to it.
What Christianity did with the teachings was to pull them down into this world, even while Jesus as appealing to our better knowledge, such as in Matthew, when he is quoted as saying: "How is it you don't understand that I was not talking to you about bread?" In short he is teaching in parables on what is going on in the mind, and so leading us back to the abstract reality of spirit, while we insist on dragging him down to our problems in the world, be they about bread, or finding a parkin spot.