The Clementine Homilies 97A Satisfactory Answer.

Then I, already perceiving the explanation, smiled, and said that he was a prophet. And Peter said: "If, then, he was a prophet, being a man, he was ignorant of nothing, by reason of his having received foreknowledge from God; how then, should He, who gave to man the gift of foreknowledge, being God, Himself be ignorant?" And I said: "You have spoken rightly." Then Peter said: "Come with me one step further. It being acknowledged by us that God foreknows all things, there is every necessity that the scriptures are false which say that He is ignorant, and those are true which say that He knows." Then said I: "It must needs be so."