God is responsible for the natural, as well as the supernatural. When things cannot be corrected or cured naturally using normal methods, we will see God work supernaturally to accomplish His purpose.
If the salvation of His Creation could have been accomplished naturally, then the supernatural birth and resurrection of Jesus was unnecessary. Nature could have naturally redeemed and restored herself, given enough time.
This was not the case, she was helplessly and hopelessly lost. Had God not intervened, she would never begin to recover on her own and eternal destruction would have continued.. well, forever!
“Grace came and stopped the process”
“If those days had not been cut short, no one would survive, but for the sake of the elect those days will be shortened. –Matthew 24:22, New International Version (NIV)