Moshe and Mashiach

What is the relationship between the soul of Moshe and the soul of Mashiach?

The prayer of Moshe for Israel is on the level of the prayer of Mashiach.
Yehoshua taught that apart from him, and from doing what he says, his Torah teaching, it is not possible to apprehend his unity with the Father. In the same way, his unity with us is also a mystery.

We speak of him as the son of David.  We don't mean that it is only by his mother's marriage. The life force that came to her and through her also came from and through David. It is not possible to speak about the soul of Moshe and the soul of Mashiach without speaking about the soul of David.

See:
https://www.youtube.com/watch?v=tv4G7KtIHWw
and
http://www.inner.org/wp-content/uploads/2017/06/Live-Broadcast-June-2017.corrected.01.pdf

"There is no king without a kingdom." as stated by Rebbe Nachman

There is no human nature without the human life force.

There is no speaking about the manifestation of the divine in the soul of Mashiach without speaking about this as the source of the divine spark of the soul of David and of Moshe.

Mashiach cannot be divorced from Israel, nor can the divine be divorced from the human in him.

Apart from this starting point, we cannot approach the study of the prayer of Yochanan 17.