ייִדישער מחשבֿה אויף יונה 3:4

It is possible for a prophet to miss something included in his prophecy, but it is impossible for him to imagine that which was not [part of] it: Behold it is also possible that one of the prophets will grasp something true in his prophecy, but will not grasp all of the true things included in it. For example, [regarding] the prophecy of Jonah the son of Amittai, to whom it was stated (Jonah 3:4), "and Nineveh will be overturned" - two [possibly] true understandings were included in this statement: The first was that it was the punishment destined for them according to their sin; and the second was that what would [actually] happen to them was foreseen in front of Him, may He blessed - that is that they would overturn themselves from bad to good. However if only the matter of the punishment had been truly included in the statement, once the Holy One, blessed be He, came back and regretted the [punishment], He would have revealed the thing to the prophets, and especially to Jonah - that a new decree had come out besides the first one. But since the Holy One, blessed be He, truly included both understandings in the first statement, He did not need to make a new decree for them. Rather the statement would stand according to the second understanding, and not the first. However at the beginning, Jonah only grasped the first [understanding], and not the second. And this is what they, may their memory be blessed, said (Sanhedrin 89b), "It is Jonah that did not comprehend."