Q. Does the Doctrine of the Immaculate Conception refer to Jesus or Mary?
A. This doctrine refers to Mary. She was concieved in the normal way by her parents. It was immaculate because Mary was conceived without the stain of original sin passed on to the human race from Adam and Eve. Just as God created Adam and Eve without the stain of original sin He caused Mary to be conceived without sin just like them. But unlike our first parents, Mary, with the grace of God, resisted the temptation to sin and remained sinless throughout her life.
Q. Then why does Mary refer to “God my savior”(Lk. 1:47)? If she never sinned she wouldn’t need a savior. Mary doesn’t seem to know she is sinless.
A. Mary called God her savior for the simple reason that she did need a savior to save her from the stain of original sin. God saved Mary at her conception, before she ever sinned. Just like a person can be saved from quicksand after falling in or saved from the quicksand before stepping into it.