The human view of knowing is based almost totally on our minds, as evidenced by the fact that we judge the worth of each other based on intelligence and intellectual achievement, but although God places value in that as well, He founds His judgement of our relationship with Him on what happens in our hearts. Do you love God? This is the greatest commandment! This is the greatest of our emotions, and is not an intellectual pursuit that we can control and dictate. It is the greatest commandment Indeed!