While the Virgin Birth concerns Jesus, the Immaculate Conception concerns the origin of Mary, and her conception in the womb of her mother, Saint Anne (by way of Anne’s husband, Saint Joachim), in whom this conception is said to have occurred without the effects of original sin, as would be befitting of a being who would become the Theotokos (or God-bearer). And so it is described as ‘immaculate,’ though not supernatural, for it does not necessitate the Holy Spirit in the role of, for lack of a better term, the fathering parent.