It is rational. God is entirely rational, and asks us to perform a rational step of believing on Jesus.
The "feelers" you've observed had a blind faith.
1 Thessalonians 2:13 KJV
<For this cause also thank we God without ceasing, because, when ye received the word of God (i.e., notitia) which ye heard of us, ye received it not as the word of men (i.e., assensus), but as it is in truth, the word of God, which effectually worketh also in you that believe (i.e., fiducia).
>Notitia
>Notitia refers to the content of faith, or those things that we believe. We place our faith in something, or more appropriately, someone. In order to believe, we must know something about that someone, who is the Lord Jesus Christ.
>Assensus
>Assensus is our conviction that the content of our faith is true. You can know about the Christian faith and yet believe that it is not true. Genuine faith says that the content — the notitia taught by Holy Scripture — is true.
>Fiducia.
>Fiducia refers to personal trust and reliance. Knowing and believing the content of the Christian faith is not enough, for even demons can do that (James 2:19). Faith is only effectual if, knowing about and assenting to the claims of Jesus, one personally trusts in Him alone for salvation.
This is the protestant answer
taken from:
https://christianity.stackexchange.com/questions/31589/what-is-the-background-of-the-words-notitia-fiducia-and-assensus-and-how/31685
https://www.ligonier.org/learn/devotionals/faith-defined/