Though Cain and Abel were born into the same family, their relationship to God could not have been more different. While they offered worship on the outside, only Abel was sincere on the inside. Having been warned by God to surrender his heart and master the temptation of sin, Cain calloused his heart and opened the door to evil. One day we will all stand before God and that which was in secret will finally be revealed. All of us are Cain or Abel. Which one are you?