The Kingdom of God is Within You by Leo Tolstoy Chapter 3 Page 15

of man, but by the miraculous manner of its transmission, which was advanced as an irrefutable proof of the truth of the interpretation put on it. This hypothesis originated from misunderstanding of the teaching, and its result was to make it impossible to understand it rightly.

And this happened first in the earliest times, when the doctrine was still not so fully understood and often interpreted wrongly, as we see by the Gospels and the Acts.

The less the doctrine was understood, the more obscure it appeared and the more necessary were external proofs of its truth. The proposition that we ought not to do unto others as we would not they should do unto us, did not need to be proved by miracles and needed no exercise of faith, because this proposition is in itself convincing and in