The West teaches that supernatural grace was lost in the fall and everyone with Original Sin lacks it. We do not believe that losing God’s grace is part of the consequences of the Fall. Therefore, we have no “need” to teach the Immaculate Conception which is foreign to the theological language of the East. The Mother of God was born with all of the consequences of the Fall and was full of God’s grace at the same time. She chose out of her free will to never sin.What’s the difference between inheriting spiritual death and being born lacking grace? If the East were to understand the Immaculate Conception as teaching that Mary was conceived in a state of spiritual life, how would that be different from Latins teaching she was conceived in a state of grace?
Since the Western teaches that we cannot have God’s grace and original sin, Mary is taught to have been immaculately conceived so that she could have God’s grace.
Here is the Byzantine view presented by Protopresbyter Michael Pomazansky in his book, Orthodox Dogmatic Theology:
However [contrary to the Roman Catholic view], God has never deprived mankind of His mercy, help, grace, and especially His chosen people; and from this people there came forth great righteous men such as Moses, Elijah, Elisha, and the later prophets. The Apostle Paul, in the eleventh chapter of the Epistle to the Hebrews, lists a whole choir of Old Testament righteous ones, saying that they are those “of whom the world was not worthy” (Heb. 11:38). All of them were perfected not without a gift from above, not without the grace of God. The book of Acts cites the words of the first martyr, Stephen, where he says of David that he “found favor (grace) before God, and desired to find a tab-tabernacle of the God of Jacob” (Acts 7:46); that is, to build a Temple for Him. The greatest of the prophets, St. John the Forerunner, was “filled with the Holy Spirit even from his mother’s womb” (Luke 1:15). But the Old Testament righteous ones could not escape the general lot of fallen mankind after death, remaining in the darkness of hell, until the founding of the Heavenly Church; that is, until the Resurrection and Ascension of Christ. The Lord Jesus Christ destroyed the gates of hell and opened the way into the Kingdom of Heaven.
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