You know this for a fact, or you believe this because you believe the bible?
However, we have historical records from civilizations dating back well over 5,000 years now. Take this basic understanding that God is a teacher, and compare it against the recorded words in religious text around the world.
You will find, that they all share a similar aspect. God has placed people into difficult situations, and their personal challenged is to see how they deal with it.
P.S: The local Freeper Witch is checking in. Sorry that I was AWOL on this topic.