The true and only name of Christ is “I am”

Rudolf Steiner: "In older languages the self was not specifically designated, for it was contained within the verb. The ‘I’ was not directly mentioned. The verb was used to show what one was doing, and this was what indicated that one was speaking about oneself. There was no name for the self. It only came about in later times that the human being gave his self a name, and in our German language that name [ich] contains the initials of Jesus Christ, which is an important symbolic fact." [Iesus CHristus: ICH]

DAS ICH

Rudolf Steiner, Berlin, May 27, 1909:

Before Christ came to earth and became a man, so much darkening had taken place that even masters in physical life no longer had the clear knowledge of supersensible things that they had previously. After Christ became flesh, things brightened up slowly. That's why some initiates didn't have a clear idea of the importance of the Mystery of Golgotha, and this was true of a great initiate who had known practically all the spiritual things that a man could know in his Egyptian initiation.

First higher beings reveal something to mankind's great initiates, and then the latter must pass this on as teachings. And no one can arrive at knowledge unless what was already revealed is first given to him as a teaching. That's quite impossible. That's why in esoteric schools they always taught things that can let a pupil come to knowledge. That's why teachings that can be given publicly are given in theosophy to give those who long for it a chance to arrive at a knowledge of truth, to get to Christ.

The childhood of great initiates differs little from that of other men, although a few points might indicate what kind of spirit lives in the child. They have to learn and enrich their knowledge like others and thereby reacquire what they had been in earlier incarnations. This was also the case with Christian Rosenkreutz. Some men may have been surprised that he didn't see the importance of the Event of Golgotha right away. This was because the ego of Christ Jesus had been placed in him, just as the etheric body in Francis of Assisi. But since it was the ego, it first had to work through to knowledge to then become fully effective. Therewith he had a high and important mission.

The true and only name of Christ is “I am”; anyone who doesn't know and understand this and calls him something else doesn't know anything about him at all. I am is his only name.

Source: https://wn.rsarchive.org/Lectures/Dates/19090527e01.html