Our Fallen nature — Our Fallen nature assumes that knowledge comes from logical inferences we make about observable data. When a Christian views life from their Fallen nature perspective, they attempt to justify what they cannot observe by finding physical evidence in order to convince others that their conclusions are not empty opinions. It is difficult for the Christian with a Fallen nature perspective, who relies only on “scientific” type (observable) processes, to defend knowledge such as revelation, because they cannot “prove” it with observable physical evidence. But humans rely on unsubstantiated bias all the time—calling it intuition or conscience, so they will not have to admit they know things they cannot prove. This is why people with a Fallen human nature perspective require Christians “prove” things of God, such as His existence, from physically observable “scientific” processes.