Atheists, skeptics and critics attack Christianity saying that it is unreasonable. Faith, they say contradicts reason. Many of us have heard their rhetoric, “Faith is a blind leap in the dark”; Faith requires one to check your brains at the door”; “Faith has been rendered meaningless in this age of science and reason.” Sadly more and more Christians sitting in our pews with doubts, week in and week out, have heard this rhetoric, and are slowly divorcing faith from reason.This view is not consistent with historic Christianity, let alone biblical. The Early Church Fathers, the Medieval Scholars, and the Protestant Reformers believed that faith fits the biblical view of reason. In this posting, I want us to consider the reasonableness of faith, keeping in mind that our finite human intellect is not able to fully grasp infinite divine truth. At the same time, let us also bear in mind that something cannot be fully understood by reason does not mean that it is unreasonable. There are some things that we cannot comprehend, but with a little effort, that which is not fully understood can be apprehended.
Source: The Real Issue Apologetics Ministry: What Happens When We Divorce Faith from Reason?