Cain was Adam and Eve's first son [Genesis 4:1] and as he grew it became evident to his father that Cain's interests were more earthly than heavenly. Adam, the priest of the family, gave Cain the task of "tilling the ground" to provide vegetables for the only human beings on earth. In the meantime, a second son, Abel, had been born, and he was given the task of looking after his father's sheep. The sheep – or goats, since they are related – were not used for food.