Jesus said not Besides, they did not come down from heaven
Very interesting response.
Jesus did say that no man as ascended into heaven and yet it appears that Enoch and Elijah did just that. Moses too. Of course, maybe they were not in heaven but in another place that Jesus dwells occasionally.
There is also the verse where it appears that Jesus is saying that if He wants the apostle John to remain alive until He returns what is it to Peter. Then a saying went out among the other apostles that Jesus said that this apostle (John) would not die, but actually what Jesus said was that if He wanted this apostle (John) to remain alive until He returns what is it to Peter.
I believe the lesson in this is that you have to be careful in what you read in scripture and not draw hasty conclusions but rather allow the Holy Spirit to led you in study and contemplation regarding spiritual matters and concerns.
It is my own personal opinion that the apostle John is still alive, either here on earth or some other place and that he will be one of the two witnesses for 3 1/2 years during the end time events, also, the other witness will be Elijah because it has been prophesied that he also will return.
Jesus is returning too. Sooner rather than later.
Praise God.