A little bit more on these insights that are markers of Knowledge: these insights have to be marked by freedom, peace, effortlessness, and the sense that it was always the case.
The feeling of Knowledge on the way to enlightenment
There is a difference between the feeling of the still mind, that is, bliss, and the sense or coming of Knowledge of the Self, whose nature is insight... Even insights are temporary and *not* the real Self, but they constitute the 'gate' part of the 'gateless gate', and there are certain distinguishing characteristics that can be helpful for the seeker: the inversion of in and out in what I've called in the past the spacious mind. You thought you were a body inside the world; now you see that you are a world within which a body is. Insights are revisited over and over again through self-inquiry and surrender until they burn away all residual ignorance and become steady, at which time it becomes clear that insights and ignorance were both illusions.