Well, if you say that it is true that for 1500 years all Christians believed in Mary’s immaculate conception, even Martin Luther! Then isn’t it also true that ” for almost 2000 years, all Christians/nonbelievers, believed that the EARTH not the sun, was the center of the solar system/universe???” And well, we ALL know how that theory turned out… which brings me to this conclusion:
Immaculate Conception = a THEORY
Jesus = The Way, The Truth and The Life.
Unless you point to a single line in scripture that specifically says “Mary was without sin” then all you have is a theory, plain and simple, not truth, just a THEORY.
BFHU: I reject your assertion that unless something is found specifically in scripture it is nothing more than a THEORY.
And for this reason:
There is not a single scripture that defines the Holy Trinity.
There is not a single scripture that lists the books that should be in the Bible.
There is not a single scripture that says the Bible and only the Bible contains all religious Truth–The doctrine of Sola Scriptura.
There is not a single scripture that says salvation is by Faith alone.
You have fallen for the Protestant habit of hypocrisy; which is to apply a standard to the Catholic Church (in order to prove she is not the One Holy Catholic and Apostolic Church founded by Jesus Christ Himself) but never apply this same standard to Protestant beliefs.
Both Catholics and Protestants have doctrines and beliefs that CAN NOT BE FOUND EXPLICITLY IN SCRIPTURE. Therefore, one must decide who to trust: The Catholic Church which defined the doctrine of the Trinity and canonized the New Testament, founded by Jesus on Peter and the Blessed Apostles 2000 years ago or one the the thousands of Protestant denominations founded by various men , a mere 40 (Chuck Smith-Calvary Chapels) to 500 years ago Martin Luther.