No, CynicalBear, you are misreading the article already. The Bible says that Jesus gave that directive from the cross. Steve Ray is saying in that article that the way we know that John followed that directive was by extra-Biblical tradition. (Not every person follows the directives of Jesus.)
I'd advise you to read the article again, slowly and prayerfully, so you understand what the author is actually saying.
(That is how you should read the Bible too.)
Dude! He is simply repeating the mantra of the RCC. I went back and read the entire thing. He was obviously not well based in scripture to start with. No one who understands prophecy from scripture would fall for the woman in Revelation to be Mary. No one who understands scripture would allow dogma to be based on an assumption that because there are no remains of Mary to be found that she must have been assumed. My “slowly and prayerfully” has been, and is done by sincerely asking the Holy Spirit for guidance while studying what Jesus and the apostles taught.
In other words, your religion made it up and now calls it Holy Tradition...
Who first taught it??? When did it start??? If your religion can't answer those questions your tradition is nothing more than a myth...
And your cohort here says that there is no such thing as xtra biblical tradition because your tradition and the bible are in perfect harmony...