Where the abyss of his wisdom is, he will teach you what he is, and with what wondrous sweetness the loved one and the Beloved dwell one in the other, and how they penetrate each other in such a way that neither of the two distinguishes himself from the other. But they abide in one another in fruition, mouth in mouth, heart in heart, body in body, and soul in soul, while one sweet divine nature flows through them both and being in each other they are both one and they remain completely one — yes, and remain so forever.

Letter IX.