I disagree on the point that Jesus was the Son of God personified or personification of divine upgrade of human consciousness. Since our soul group has gone through a few harvests already the path to the next level has not changed. I restate that there is nothing new under the sun including how we have to become beings of divine light. If Jesus did exist he only showed how this light had to be personified. He was not the ensign of a new way to be.I am glad that you have done your due diligence and are asking your own questions as everyone should, instead of just repeating stereotypes.
To answer your question in very simple terms, the idea is that Christ provides a fast track to accede to the next density level if you want, and the incarnation event as Jesus Christ was a perfect example to that effect.
A group of ants don’t wake up one morning and get together randomly and build a mound, they have the instinct encoded since birth. The God of ants had instilled that instinct in them. Ants don't evolve.
We humans as a species have like every species a certain built a runtime that we are born with and could run forever on like a cuckoo clock, but maybe we could use an upgrade. In order to get past that same old routines, in our spiritual evolution we are given a key, a shibboleth in order to upgrade ourselves and activate a higher conscience or reach the next level and eventually accede to the Throne of Creation (think breaking of the karmic cycle through love, acceptance, etc) think getting out of the loop. That key is provided by God himself, as the Logos of Creation or his Son in personification, manifested incarnation in Jesus Christ to lead by example and show us how it’s done and that... si se puede. We need to discover and resonate with that key in our own manifestation to open the gate of heavens, which makes the understanding and acceptance of the Jesus Christ drama the best course of action - a recognition of the effort if you want - and opportunity at the same time to learn, build on it and evolve on it with our creativity. Not necessarily through imitation Christi or devotion, there are multiple other ways of acceptance and response. Thus we become actors and co-creators on this plane of existence.
To me, the classic script as laid out by the Gospels and Christian tradition has proven a solid blueprint answering to the widest possible philosophical and psychological blocks. Alternatively, if you want to create your own adaptation or find a better way - feel free to do that, see how far you can get.
If I am understanding you correctly, you are saying that Jesus Christ opened the door to a new way of being! Therefore, it has to be a third way, which has to have two elements to it. First it has to be different then the other 2 ways, and second it has to show how the old way of being the divine light was inadequate to the task of ascending to the 4th dimension. If this is the case, can you elucidate on these two elements of the new way.