Replies

My rationalization is rational, at least. They are good reasons. Let me expand upon the "sibling rivalry" point. Mary remained without sin her entire life. She was the new ark of the covenant, a perfect vessel. One would not even think of desecrating the holy vessel which held God Incarnate with mere human contents. That's the spiritual significance.
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Please consider this:

Romans 3:

20 For no human being will be justified in his sight by works of the law, since through the law comes knowledge of sin.

21 But now the righteousness of God has been manifested apart from law, although the law and the prophets bear witness to it,

22 the righteousness of God through faith in Jesus Christ for all who believe. For there is no distinction;

23 since all have sinned and fall short of the glory of God,

24 they are justified by his grace as a gift, through the redemption which is in Christ Jesus,

25 whom God put forward as an expiation by his blood, to be received by faith. This was to show God's righteousness, because in his divine forbearance he had passed over former sins;

26 it was to prove at the present time that he himself is righteous and that he justifies him who has faith in Jesus.
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I realize this touches on "Justification by Faith" (another sensitive subject) but, let's just concentrate on "sin".

Do you have any Scriptural evidence that Mary was exempted?