In consonance with this we may call attention to the fact that on the question of possibility the same difference of opinion exists that we found on the matter of predication. For the theist, possibility has its source in God, while for the antitheist, God has his source in possibility. Hence, what one will deem most possible, the other will consider altogether impossible.
Similarly, once more with the question of probability. For theism, God is the source of the probable. For antitheism, the probable is the source of God. Hence, what one thinks altogether probable, the other will think altogether improbable.
– Cornelius Van Til, A Survey of Christian Epistemology p.190