The third heart of Mary is divine and is truly God Himself, for it is none other than the love of God. This is the heart of which she says: "I sleep, and my heart watcheth," which means according to the interpretation of several holy Doctors: "While I grant necessary rest to my body, my Son Jesus, who is my Heart and whom I love like my own heart, is always watching over me and for me." http://devotiontoourlady.com/st-john-eudes.html (St. John Eudes) I read that in "The Admirable Heart of Mary" this morning, in the wee hours. I sleep, and my heart watcheth ... and I fell into a deep, hours-long slumber.