Moses Maimonides

“ Neither am I surprised at his votaries, for they were persuaded by him because of their sorry plight, their ignorance of the importance and high rank of the Messiah, and their mistaken comparison of the Messiah with the son of the Mahdi [the belief in] whose rise they are witnessing. But I am astonished that you, a scholar who has studied carefully the doctrines of the rabbis, are inclined to repose faith in him. Do you not know, my brother, that the Messiah is a very eminent prophet, more illustrious than all the prophets after Moses? ”

“ Do you not know that a false pretender to prophecy is liable to capital punishment, for having arrogated to himself unwarranted distinction, just as the person who prophesies in the name of idols is put to death, as we read in Scripture "But the prophet that shall speak a word presumptuously in My name, which I have not commanded him to speak, or that shall speak in the name of other gods, that same prophet shall die." ”

“ You mention that a certain man in one of the cities of Yemen pretends that he is the Messiah.17 As I live, I am not surprised at him or at his followers, for I have no doubt that he is mad and a sick person should not be rebuked or reproved for an illness brought on by no fault of his own. ”