One bit of logic I’ve never been able to understand about the idea of the immaculate conception, is that, given this fallen world, if God can and did create sinless humans (like Rome says Mary, and possibly John were)before the cross, why in the world would He need to send Jesus to die for our sins?
He could of more easily just wiped sin out in one generation by causing EVERYONE’S conception to be immaculate.
God can do anything He wants. Omnipotence is, well, all powerful. The question is not what CAN God do, but what has He done and what does He want of us?
Mary was redeemed and saved, but given a singular grace of being saved in ANTICIPATION of Jesus' redemptive sacrifice on the Cross. She was saved from sin BEFOREHAND, in light of His merits.
We've been over and over this, again and again on FR in literally tens of thousands of posts over hundreds of threads. Not blaming you...just making a general comment about the tiresome nature of these threads. You actually asked a good question.