The Rambam wrote in his letter to the men of Yemen: I have in my hand a wondrous tradition from my fathers and elders who received it from their fathers and their elders back to the beginning of our forefathers in Jerusalem, regarding the verse "Now it shall be said to Yaakov and to Yisrael what God has wrought," there is a secret in it that the time it indicates how much time there is from the six days of creation until the time when prophecy will return...