O.K.--I finally found it. Once you read it, you'll know what I'm referring to. I'm only sharing an excerpt, which contains the relevant part. The comment was posted by 'Invisible' on June 26, 2014:
Invisible Wrote:
-------------------------------------------------------
> Something to ponder:
>
> At Grace Chapel of Southgate Probably in (1966 )
> or 1967 - what would occur - was made known - no
> less than 15 years - before it came about. When
> the church was yet but a hand full of people,
> this was spoken.
>
> What was spoken - would have been recorded on reel
> to reel - for it was spoken - before the days of
> the cassette recordings.
>
> I was present at Grace Chapel - in Southgate - in
> 1966 or 1967 - when John was standing in the
> pulpit and saw a vision of the future and spoke
> prophetically concerning all he was seeing - - of
> the day when he would not be leading the church,
> and it was shown to John, that a very young man,
> too young to have the responsibility for the
> church, was leading the church, instead of John
> leading the church - and this young man was
> leading the church astray, off the tracks and away
> from God. And being shown this - John cried out to
> the Lord, for the church because the church was
> suffering all kinds of sufferings as a result of
> this young man leading the church astray and these
> sufferings John said , were far reaching - even
> beyond the church - because the church was being
> led astray.
Invisible Wrote:
-------------------------------------------------------
> Something to ponder:
>
> At Grace Chapel of Southgate Probably in (1966 )
> or 1967 - what would occur - was made known - no
> less than 15 years - before it came about. When
> the church was yet but a hand full of people,
> this was spoken.
>
> What was spoken - would have been recorded on reel
> to reel - for it was spoken - before the days of
> the cassette recordings.
>
> I was present at Grace Chapel - in Southgate - in
> 1966 or 1967 - when John was standing in the
> pulpit and saw a vision of the future and spoke
> prophetically concerning all he was seeing - - of
> the day when he would not be leading the church,
> and it was shown to John, that a very young man,
> too young to have the responsibility for the
> church, was leading the church, instead of John
> leading the church - and this young man was
> leading the church astray, off the tracks and away
> from God. And being shown this - John cried out to
> the Lord, for the church because the church was
> suffering all kinds of sufferings as a result of
> this young man leading the church astray and these
> sufferings John said , were far reaching - even
> beyond the church - because the church was being
> led astray.