Revelation 16:16 And he gathered them together into a place called in the Hebrew tongue Armageddon.

Will Armageddon be an actual Hebrew name, used and understood by people in Israel at the time of the return of Jesus? Up to now, isn't mostly Christians who use that name, and have attempted to identify its location, and perhaps tour guides. But the scriptures makes a point of only mentioning what's called in Hebrew.

Were not John's books after the destruction of the temple by the Romans? So in John's gospel, after 70 AD, three places are mentioned, but then also their Hebrew name is pointed out, at a time when those Hebrew names may have no longer been the common name for those places after 70 AD, describing events which had already occurred:

John 5:2 Now there is at Jerusalem by the sheep market a pool, which is called in the Hebrew tongue Bethesda, having five porches. 

John 19:13 When Pilate therefore heard that saying, he brought Jesus forth, and sat down in the judgment seat in a place that is called the Pavement, but in the Hebrew, Gabbatha.

 17 And he bearing his cross: went forth into a place called the place of a skull, which is called in the Hebrew Golgotha:

       But was Armageddon known and called such by Hebrew speaking Jews before 70 AD? Since 70 AD, its Hebrew name has been mostly academic amongst Christian preachers and teachers. Revelation 16:16 is not in the past, but is still yet future. So will that location become known by those in Israel, and called by them in Hebrew, and not known by its Arabic or English name?