A Jew called Concerned Reader asked me on another blog: “Shouldn’t faith be reasoned, and based on a comprehension of the covenant G-d made with Israel? As opposed to just a belief?”
Let’s consider reason without bringing God or religion into it. It is not, logically, possible to use reason to prove that it is rational. Without faith/trust in your reason, you end up in an unreal, relative, random, nonsensical universe. Most human beings refuse to accept this logic. An illogical person will say he reasons well without having faith in his reason.
With regard to the relationship between reason and belief in the God of the Bible (Tanach and New Testament), this God chooses to reveal Himself to humanity. As with Abram, so with every one who accepts God. God of his good pleasure sovereignly, therefore, unilaterally, chose to reveal himself to Abram. No one knows why he revealed himself to Abram, to his progeny and later to the Israelites, or to any one else. “And the LORD said, ‘I will cause all my goodness to pass in front of you, and I will proclaim my name, the LORD, in your presence. I will have mercy on whom I will have mercy, and I will have compassion on whom I will have compassion’” (Exodus 33:19).
In the scriptures, reason (thought) is the tool God gives us to understand WHO He is; not THAT he is (exists). The revelation at Sinai was a special gift of God’s generosity (mercy, grace) revealing what reason couldn’t discover. The first verse of Genesis says “In the beginning, God…” God’s existence in the Bible is a given (not a “taken”).
The following sounds crazy to most Jews. “I believe that I may understand” (Augustine of Hippo). The Hebrew prophets, indeed, all godly people in the Tanach, would agree with Augustine.
Jews have too much faith in their reason. Many of them believe that reason is all they need to find God. They want to be Jewish Platos (chollile), when in fact they are, as the Tanach emphasises play dough – not play things – in the hand of God.