Are you contrasting the idea of “blind” faith with what you consider a “reasonable” faith?
If that is true, have you considered that Jesus said:
John 20:29 Jesus said to him, “Have you come to believe because you have seen me? Blessed are those who have not seen and have believed.”
Thus legitimizing and praising, what many today, look down upon as, blind faith.
The definition …atheists assume is the default Christian definition of faith, seems to be something along these lines:
Faith is a belief in God without a requirement for proof of his existence.
That reminds me of Mark Twain’s definition, “Faith is believing in something that ain’t so.”
It seems that the biblical and traditional definition is this:
God can be proven from human reason.
God has established himself as trustworthy.
Therefore, faith is a belief in things we cannot prove, but which a trustworthy God has revealed as true.
That doesn’t follow. Your syllogism begins with the idea that God can be proven. Thus, we believe in a God whose existence is proven. But ends with the idea that we do believe in “things”, presumably, amongst which is God, which can’t be proven.
For the sake of discussion, I recognize that faith is one of the theological virtues, given freely by God, which makes it easier to accept and believe truth. But the application of this grace is applied in the manner I describe above, not toward a belief in God absent of or contrary to any evidence, reason or proof.
There’s a lot more that can be said here, but I’m leaving that to the development of the conversation. I hope that any responses can be based on documentation from Scripture or Church teachings. Please let me know if I can clarify.
There are many definitions of faith. One, which I already quoted, by Jesus, says that we can legitimately believe in Him, even though we have not seen Him. Many categorize this as “blind” faith. But I don’t. It is simply, a grace from God. Many people hold this kind of faith and are looked down upon by intellectuals who themselves had to be persuaded of God’s existence or perhaps, never have been persuaded. These folks do not realize that the superior attribute is faith. Reason, is below faith. Faith, is superior to reason.
Then, there’s faith as trust. For example, do you trust your father? Or, put another way, do you have faith in your father? Most people do. Because their fathers have proven trustworthy. When they’re in a jam, they call their father. This definition is also in Scripture:
Hebrews 11:6 But without faith it is impossible to please him, for anyone who approaches God must believe that he exists and that he rewards those who seek him.
Both parts of this conjunction are necessary. Because if one only holds the first, that faith is incomplete, as is mentioned in another Scripture:
James 2:19 You believe that God is one. You do well. Even the demons believe that and tremble.
What say you?