Teresa of Avila
Teresa (28 March 1515 – 4 October 1582), was a prominent Spanish mystic, Roman Catholic saint, Carmelite nun, author during the Counter Reformation, and theologian of contemplative life through mental prayer. She was a reformer of the Carmelite Order and is considered to be a founder of the Discalced Carmelites along with John of the Cross. (Wikipedia)
Excerpt from: The Life of St. Teresa of Jesus
On Palm Sunday, at Communion, I was in a deep trance,–so much so, that I was not able even to swallow the Host; and, still having It in my mouth, when I had come a little to myself, I verily believed that my mouth was all filled with Blood; and my face and my whole body seemed to be covered with It, as if our Lord had been shedding It at that moment. I thought It was warm, and the sweetness I then felt was exceedingly great; and our Lord said to me: “Daughter, My will is that My Blood should profit thee; and be not thou afraid that My compassion will fail thee. I shed It in much suffering, and, as thou seest, thou hast the fruition of It in great joy. I reward thee well for the pleasure thou gavest me to-day.” He said this because I have been in the habit of going to Communion, if possible, on this day for more than thirty years, and of labouring to prepare my soul to be the host of our Lord; for I considered the cruelty of the Jews to be very great, after giving Him so grand a reception, in letting Him go so far for supper; and I used to picture Him as remaining with me, and truly in a poor lodging, as I see now. And thus I used to have such foolish thoughts–they must have been acceptable to our Lord, for this was one of the visions which I regard as most certain; and, accordingly it has been a great blessing to me in the matter of Communion.