Answer: I do not know what a “revelation” is. At times certain sensations of the world, as if it exists outside of him, awaken in a man. But in fact, the world is inside a man anyway. In other words, we sometimes experience such states, but they come and go.
As a rule, they arise in a person at the initial stages of his Kabbalah studies during the first two to three years of studies.
And then they practically disappear because a person begins to approach the state when through his own actions, his own efforts, he must receive the sensation of the upper world by himself to the extent of his likeness to it. One doesn’t receive it as a small gift, but earns it oneself.
From the Kabbalah Lesson in Russian 11/27/16