[If reason and logic come from God doesn't he expect us to use it?]

Of course. The anti-theist uses it too...but how does he account for abstract, invariant universals like logic?

If (as many atheists are) he is a strict materialist, there is nothing in his worldview but matter in motion. He has no reason to use logic, as logic (not a material thing) should not exist in his worldview. He will have to use the Christian worldview for such things. At that point, he is being inconsistent...living one way, but believing another.

We find that, just as Solomon told us, the atheistic worldview is a foolish position to hold.