Revelations and vain imaginings?

Spurgeon, "THE PARACLETE" No. 1074. John 14:16

Take care never to impute the vain imaginings
of your fancy to the Holy Spirit. I have seen the
Spirit of God shamefully dishonored by people --
I hope they were insane -- who have said that
they have had this and that revealed to them.

There has not for some years passed over my
head a single week in which I have not been
pestered with the 'revelations' of hypocrites or
maniacs. Semi-lunatics are very fond of coming
with messages from the Lord to me, and it may
save them some trouble if I tell them once for all
that I will have none of their stupid messages.
When my Lord and Master has any message to
me he knows where I am, and he will send it to
me direct, and not by madmen.

Never dream that events are revealed to you
by heaven, or you may come to be like those
idiots who dare impute their blatant follies to
the Holy Spirit.

If you feel your tongue itch to talk nonsense,
trace it to the devil, not to the Spirit of God.

Whatever is to be revealed by the Spirit to any
of us is in the word of God already -- he adds
nothing to the Bible, and never will. Let persons
who have revelations of this, that, and the other,
go to bed and wakeup in their senses. I only wish
they would follow the advice, and no longer insult
the Holy Spirit by laying their nonsense at his door.