How would you address these doubts?

I am grading a Bible Lesson for an inmate in Tallahassee Florida Detention Facility. He has just learned how the Bible asserts…

• God exists
• God created us and the world
• God is eternal, invisible, all-powerful, etc.
• God has made Himself known

How would you address these doubts? (My answer appears in blue. Skip over it and comment your ideas.)