There is no biblical reference to the assumption of Mary. The Gospel of John was written around 90 A.D., which is more than 100 years after Mary was born. (Surely Mary was more than ten years old when Jesus was conceived.) If Mary had been supernaturally assumed into Heaven, wouldn’t John (the disciple that Mary lived with) have mentioned it? When Enoch and Elijah were taken up to Heaven, the Bible recorded it. With Elijah it was recorded in some detail. (See Genesis 6:24 and 2 Kings 2:1 18.)
The Assumption of Mary was officially declared to be a dogma of the Roman Catholic faith in 1950. This means that every Roman Catholic is required to believe this doctrine without questioning it. The teaching of the Assumption originated with heretical writings which were officially condemned by the early Church.
In 495 A.D., Pope Gelasius issued a decree which rejected this teaching as heresy and its proponents as heretics. In the sixth century, Pope Hormisdas also condemned as heretics those authors who taught the doctrine of the Assumption of Mary. The early Church clearly considered the doctrine of the Assumption of Mary to be a heresy worthy of condemnation. Here we have “infallible” popes declaring something to be a heresy. Then in 1950, Pope Pius XII, another “infallible” pope, declared it to be official Roman Catholic doctrine. (Mary Ann Collins: Mary Worship?)
On what is based the idea of the assumption of Mary?