We know that God spoke unto Moses: as for this fellow, we know not from where he is.
Read Chapter 9
Cyril of Alexandria
Boldly do they speak again, armed with that folly which is so familiar and dear to them; and in undiminished shamelessness they once more boastfully exclaim: We know. And when they add: that God hath spoken unto Moses, thereby recognising that he deserved great honour, they in another way again insult him, seeing that they take no account of his precepts. For they ignorantly condemn One Whom as yet they know not, or rather they dishonour Him in spite of what they have learnt concerning Him, although the Law forbids them to act unjustly and quarrelsomely towards any or to judge at all in this way. Something of this sort they say again now: "confessedly God hath spoken unto Moses; there is no sufficient reason for any to be in doubt on this point; He enacted laws by him, and laid down regulations how every thing is to be done. Certainly therefore, he says, he is a transgressor of the sacred Scriptures, who has contrary opinions to those expressed by Moses: and manifestly the law concerni...
By whose word, whose report? That of our forefathers, says one. Is not He then more to be believed than your forefathers, who confirms by miracles that He came from God, and that He speaks things from above? They said not, We have heard that God spoke to Moses, but, We know. Do ye affirm, O Jews, what you have by hearing, as knowing it, but deem what you have by sight as less certain than what you have by hearing? Yet the one ye saw not, but heard, the other ye did not hear, but saw. What then says the blind man?