Theists will basically just say that God gave us free will, so he cannot know (in advance) what we will do because for him to do so would mean determinism is true, and the type of free will they use here (libertarian free will) is not one with which such a determinism is compatible.
"The reason things will never get better is because people keep electing these rich cocksuckers who don't give a shit about you."
-George Carlin
-George Carlin