I too wonder about those who preach about the timelessness of God's knowledge with respect to predestination, yet deny God could have predetermined Mary's sinlessness or prejudged Mary and found her sinless. They preach a belief in the resurrection of the dead yet deny that Mary could have already been resurrected. They profess for themselves a qualification for a "rapture" not found in Scripture but deny that Mary could have been "taken up". What do they think "magnify the Lord" and "mother of my Lord" mean?
I have witnessed pious and sincere Protestants in pilgrimages to the Holy Land brought to tears in Bethlehem and Jerusalem because of its physical connection to Jesus, yet they completely and utterly deny Mary was the most tangible point of the intersection of God with mankind. They are in error.
Jesus replied, “You are in error because you do not know the Scriptures or the power of God. At the resurrection people will neither marry nor be given in marriage; they will be like the angels in heaven." - Matt 22:29-32
Just show us where Christ or the disciples ever taught the sinless mary... or the assumption of mary ... it is all Catholic static..meant to have men take their eyes off of Christ..