We have to understand that the Catholic church has been around for 2000 years.They have Apostolic succession. They have Sacred Tradition to back up their claims. It doesn't matter that Marian theology is not mentioned in the bible, Catholic tradition and the early fathers are proof enough. Any honest Catholic will tell you that their tradition is on the same level as scripture. We have to understand that the Word of God is not enough, we need the traditions of man to see the whole picture. If you don't believe this they can show you quotes from people that lived 2000 years ago that agree with them. The early fathers had to be right because, well, because they heard all this before it got lost in translation, so to speak. The fact that they have been around for so long proves that the gates of hell did not prevail. This is why we have such a difficult time giving the gospel..Catholics have a hard time understanding that the Bible is the infallible word of God..they have given that word (infallible)to some men on some occassions so it has lost its meaning.They fight the words of God with the words of men and see both as equally valid.
It doesnt matter to them that there is no record of an event like the assumption of Mary.Could you imagine how people would have talked about it?.How Paul would have used it in the Letters to encourage the new church? But it is written no where,so when asked for the proof they will tell you ,"there is no body"(perhaps Chandra was actually assumed huh?..Or Hoffa)?
Because tradition and ancient writings have been placed on the same level as Scripture,there is no way for a man to correct the error.Only the Holy Spirit can do that
>I>" Rev 22:18-19 18 I warn everyone who hears the words of the prophecy of this book: If anyone adds anything to them, God will add to him the plagues described in this book. 19 And if anyone takes words away from this book of prophecy, God will take away from him his share in the tree of life and in the holy city, which are described in this book. (NIV) "
It is amazing how they will use the latter part of this passage and ignore the beginning