I mean, the entire approach of science emerged from the monasteries of Europe. If you have faith that God exists, and that God is rational, then there should be a way to study repeatable, measurable, and observable things about His universe. It was only way later that that the philosopher Nietzsche said God is dead, and asked why do we need God in the equation, why not just science?
Of course the thing is, Christian philosophy is not just about rationality in God's universe, but the free will of His human creations, which directly leads to things like the rule of law, and the importance of freedom in society. Something atheists have been very poor at. Just look at the atheist subreddits, they are socialist cesspools.