Why Would We Need to Be in a Fallen World to Fully Know God?

Questions about why, if Adam and Eve were in perfect community with God, we would need to be in a fallen world to fully know God, and why God cursed nature after the fall.

 

• If Adam and Eve were in perfect community with God, why would we need to be in a fallen world to fully know God, and did God create a set of circumstances that would bring about a fallen world solely to reveal his other qualities?
• Why did God curse nature after the fall?