A pastor I watched said God does not always reveal his method because limitation increases Faith. Thoughts?

His example for this was that Joseph was in a state prison after God told him his brothers would bow before him one day. He did not know how God would make that come true. Then one day he was promoted to prime minister because a prison ally he met 2 years before said he could interpret dreams. The same power that led to his curse 20 years before led to his salvation 20 years later.

A pastor I watched said God does not always reveal his method because limitation increases Faith. Thoughts?
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