Caspar Schwenckfeld sent one of his silly books to Luther and asked his opinion of it. When the messenger dropped it off Luther didn’t let him leave until he gave his this response to pass on to his master-
The stupid fool, [Caspar Schwenckfeld], who is possessed by the devil, has no understanding, and doesn’t know what he’s mumbling about. If he won’t stop, at least let him not bother me with his books, which the devil is spitting up and spewing out of him. Let him have this as my final judgment and answer.
The Lord rebuke you, Satan! And the spirit who called you, the course which you take, and all the sacramentarians and Eutychians who side with you in your blasphemies—to hell with you!
As it is written, ‘I did not send the prophets, yet they ran; I did not speak to them, yet they prophesied’ [Jer. 23:21].” — Martin Luther
Luther would say the same thing to so many today. So many.