An chunk from a Lifeteen Blog, read the rest here
About twelve years ago a teen named Billy asked me this question, “Why do you Catholics believe that Mary ascended into heaven, when it’s not even in the Bible?”
He said “you Catholics” because he went to a local Bible Church but had been coming to a Life Teen Summer Bible Study with some of his Catholic friends.
“Well, first… ” I replied, “Mary did not ascend into heaven; the Blessed Virgin Mary was assumed into heaven. Jesus ascended by His own power. Mary was taken up into heaven by God.” That little difference is a big difference, so I wanted to be sure he understood it.
Billy then replied, “Okay, fine… but it’s still not in the Bible. The Church made it up.”
This is where the conversation got really interesting.