The royal agents immediately afterwards sent to London a treasonable letter, falsely attributed to Mather; but its spuriousness seems to have been suspected in England and Mather was not "fetch'd over and made a Sacrifice."
Amongst Evangelicals the spuriousness of the letters is almost generally admitted.
The Speculum affords the most conclusive proof of the spuriousness of another work attributed to Richard and long accepted by the learned world as his.
He has there not only demonstrated, from the external and internal evidence alike, the spuriousness of the whole treatise, but in a collation (extending to nearly a hundred pages) of numerous passages with corresponding passages in classical medieval authorities, has also traced out the various sources whence Bertram derived the terminology and the facts which he reproduced in the De Situ.
Not only did an extreme party arise in Asia Minor rejecting all prophecy and the Apocalypse of John along with it, but the majority cf the Churches and bishops in that district appear (c. 178) to have broken off all fellowship with the new prophets, while books were written to show that the very form of the Montanistic prophecy was sufficient proof of its spuriousness.