In a recent book, J. R. Lucas presents an argument to show that if God has infallible knowledge of the future, our will is not free. Thus, Lucas concludes, like the medieval Jewish philosopher Gersonides, that God in creating beings with genuinely free will, abdicates some of his omniscience as well as some of his omnipotence. God could, but will not, determine our choices, since such an exercise of his power would rob us of free will. Similarly, Lucas holds, God could but does not foreknow our future choices since this also would rob us of free will. This argument, from so formidable a foe of determinism as Lucas, merits our most serious attention. However, I believe that there is a way to evade its conclusion, a way which Lucas considers but rejects (in my view too hastily).