Where does the Bible say that Mary ascended into heaven?
It does not say that Mary ascended into heaven. In fact it says the opposite. Writing well after her death the apostle Johngives the definitive word on this matter. No one has ascended into heaven but he who descended from heaven, the Son of Man (John 3:13). The early Church would have condemned anyone who asserted that Mariam (now called Mary) had gone into heaven as a heretic. Her family who constituted the leaders of the early Church would have laughed anyone to scorn who asserted that she had no other children. More information is available in the papers The Virgin Mariam and the Family of Jesus Christ (No. 232); The Soul (No. 92) and The Resurrection of the Dead (No. 143).