Thanks for your comment; let me suggest the following:

In the Garden - which I don't read as a parable - there was a real tree, the threat of death was real, and the interaction with God was face-to-face. So I don't see this as requiring blind trust. Surely Adam and Eve had a poor understanding of what death would mean, but it was a transparent warning in a real place.

However, I think this point can be taken to extremes. Let me add a note of clarification: God rewards blind trust, but he doesn't demand it.

Abraham left his family and home at a word from God (no miracles), but he had trouble believing that God could provide him an heir from his old wife. When he finally believed God's promise, we're told that "Abraham believed and God credited it to him as righteousness." This becomes the primary source text for the NT doctrine of justification by faith.

The Centurian had never met Jesus, but begged him off, understanding implicitly that Jesus had perfect authority over his child's illness. To this, Jesus responded: "I have not seen such faith in all the house of Israel. Go, your request has been granted..."