Mary conceived the second person of the Trinity via the Holy Spirit, obviously this unique manner of conception had something to do with the sanctifying grace that you refer to:
I am not sure what you mean. I don’t see the connection betwee the Incarnation and sanctifying grace.
The Catholic view is that we contract original sin through sex at the moment of conception
I don’t think that is the Catholic or Orthodox teaching. It was once popular, and maybe some still use it, but I don’t think it is an official position, or even a common one any more.
The SPOTLESS lamb, Jesus, could not contract this “iniquity we are conceived” in because it would defile him, and he would no longer be SPOTLESS.
This is where I disagree, and it is the point I have been trying to make in my last few posts. The Incarnation is the source of Grace for us. God became man so that man might become god. There is a direct relationship between both sides of this statement. In uniting the human nature to himself, it is purified. Do you think there could be any lack of Grace in human nature that is united to God? What Grace did Mary recieve at her conception that Jesus didn’t have from the Incarnation?
The reason why I point out that the Incarnation happened at the moment of conception, rather than some later time, is because Rome argues that Mary recieved Grace at conception, rather than at some later time. Otherwise, Mary would have become defiled by OS. The Incarnation leaves no room for the reception of OS, even from a western view of OS. Jesus’ nature could lack Grace, because it was completely united to God.
But there is also Mary to consider, and knowing that she was full of grace even before she was carrying Jesus in her womb, and knowing that the church fathers referred to her as “immaculate” or without sin, and knowing that original/ancestral sin is passed on by generation Mary had to have been spared such a stain. To believe that she was able to remain pure without benefit of some additional grace (something which did set her apart) smacks of pelagianism.
I don’t see how you can assert that she was full of Grace before the Incarnation. There is an ancient Syriac tradition that speaks of that moment when the angel speaks those words is the moment of the Incarnation.
The Orthodox are often accused of semipelagianism.
I have a problem with this kind of argument because it seems that everything is forced to fit so that it sounds good. Mary was full of grace, therefore she never sinned, therefore she must have recieved a particular grace at conception to protect her from sinning. If you disagree with the conclusion you are a pelagian. It’s all wrapped up nicely.
I do not believe that omitting original/ancestral sin would make the incarnation superfluous, it was however necessary in light of what we know via the fathers and scripture to ensure that he not be tainted by sin of any kind (contracted and/or committed).
As I have been pointing out, it is superfluous. The Son is the source of Grace, so it is superfluous to argue that he needed to be preserved by sanctifying Grace, that comes apart from the incarnation. It is redundant as well because the idea is that he is the source of this Grace in a roundabout way. The incarnation is the source of the Grace given to Mary, and consequently that given to Christ to keep his nature pure. It is a perfect loop.
I don’t think though that the CC asserts that Jesus would have had a corrupt nature If the IC didn’t occur. Even if Mary would have sinned, it wouldn’t imply that Jesus’ nature would be stained by OS, or lack Grace. So I think this is a superfluous argument we are having.