At a glance:
Reading everything that the Bible has to say about Mary it is very clear why the Roman Catholic Church must combine Scripture, plus tradition, plus apparition messages. Because taking into consideration everything that the Bible does say about Mary it is utterly impossible to even imagine a Mary who is immaculately conceived, sinless, co-redeemer, assumed into heaven and crowned queen of heaven, intercessor, our mother, etc., etc.
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Roman Catholic Maryology: Mary in Roman Catholicism, part 2 - Everything the Bible Says About Mary | True Freethinker