en_tn/dan/02/30.md

this mystery was not revealed to me

This can be stated in active form. Alternate translation: "God did not reveal this mystery to me" (See: rc://en/ta/man/jit/figs-activepassive)

This mystery was revealed to me so that you

This can be stated in active form. Alternate translation: "He revealed the mystery to me so that you" (See: rc://en/ta/man/jit/figs-activepassive)

you ... may understand the interpretation

The abstract noun "interpretation" can be translated as a verb. See how you translated this in Daniel 2:4. Alternate translation: "you ... may understand what the dreams mean" (See: rc://en/ta/man/jit/figs-abstractnouns)

know the thoughts of your mind

"know the thoughts of your innermost being" or "know your innermost thoughts"