Jesus shows us the invisible God. The word was with God, and the word was God…and the word became flesh…and we have seen his glory (John 1:1, 14). Yet, many did not believe (John 1:10).
The eyes of the heart are preeminent. The unseen seen remains unseen by those who will not see. Miracles mean nothing to those who insist to refuse. Resurrections reveal nothing to the unbelieving heart (Luke 16:31). So then we have this odd happenstance that those who saw Jesus did not see Jesus. Yet also we may say those who have not seen Jesus may see Jesus (John 20:29). For the heart can see what the eyes cannot. And the eyes cannot see what the heart will not see.
All of this is not a matter of blind faith. It is the nature of all beliefs. The paranoid and the rational have the same evidence. The difference is one of belief.
So then, my religion must be anchored in my heart, not in my head, though the two would never contradict each other when both are working properly and the facts are known.
We can thus skip the head games and confidently rest in the wisdom of the Proverbs: “Trust in the Lord with all your heart and do not lean on your own understanding” (Proverbs 3:5).