I found this a while back but just remembered this thread.
The earliest I’ve found references to of profane babbling.
There is said to be a certain village called Ardabau in that part of Mysia, which borders upon Phrygia.234There first, they say, when Gratus was proconsul of Asia,235 a recent convert, Montanus by name, through his unquenchable desire for leadership,236 gave the adversary opportunity against him. And he became beside himself, and being suddenly in a sort of frenzy and ecstasy, he raved, and began to babble and utter strange things, prophesying in a manner contrary to the constant custom of the Church handed down by tradition from the beginning.237
8 Some of those who heard his spurious utterances at that time were indignant, and they rebuked him as one that was possessed, and that was under the control of a demon, and was led by a deceitful spirit, and was distracting the multitude; and they forbade him to talk, remembering the distinction238 drawn by the Lord and his warning to guard watchfully against the coming of false prophets?239 But others imagining themselves possessed of the Holy Spirit and of a prophetic gift,240 were elated and not a little puffed up; and forgetting the distinction of the Lord, they challenged the mad and insidious and seducing spirit, and were cheated and deceived by him. In consequence of this, he could no longer be held in check, so as to keep silence.
9 Thus by artifice, or rather by such a system of wicked craft, the devil, devising destruction for the disobedient, and being unworthily honored by them, secretly excited and inflamed their understandings which had already become estranged from the true faith. And he stirred up besides two women,241 and filled them with the false spirit, so that they talked wildly and unreasonably and strangely, like the person already mentioned.242 And the spirit pronounced them blessed as they rejoiced and gloried in him, and puffed them up by the magnitude of his promises. But sometimes he rebuked them openly in a wise and faithful manner, that he might seem to be a reprover. But those of the Phrygians that were deceived were few in number.
"And the arrogant spirit taught them to revile the entire universal Church under heaven, because the spirit of false prophecy received neither honor from it nor entrance into it.
10 For the faithful in Asia met often in many places throughout Asia to consider this matter,243 and examined the novel utterances and pronounced them profane, and rejected the heresy, and thus these persons were expelled from the Church and debarred from communion."
11 Having related these things at the outset, and continued the refutation of their delusion through his entire work, in the second book he speaks as follows of their end:
http://www.earlychristianwritings.com/text/antimontanist.html
