The Gnosis of Philo

From Philo of Alexandria:

(34) I am not ashamed to relate what has happened to me myself, which I know from having experienced it ten thousand times. Sometimes, when I have desired to come to my usual employment of writing on the doctrines of philosophy, though I have known accurately what it was proper to set down, I have found my mind barren and unproductive, and have been completely unsuccessful in my object, being indignant at my mind for the uncertainty and vanity of its then existent opinions, and filled with amazement at the power of the living God, by whom the womb of the soul is at times opened and at times closed up; (35) and sometimes when I have come to my work empty I have suddenly become full, ideas being, in an invisible manner, showered upon me, and implanted in me from on high; so that, through the influence of divine inspiration, I have become greatly excited, and have known neither the place in which I was nor those who were present, nor myself, nor what I was saying, nor what I was writing; for then I have been conscious of a richness of interpretation, an enjoyment of light, a most penetrating sight, a most manifest energy in all that was to be done, having such an effect on my mind as the clearest ocular demonstration would have on the eyes.

– Migration of Abraham (7.34-35 Yonge)