Rabbi Tanhum ben Hanilai compared the laws of kashrut to the case of a physician who went to visit two patients, one whom the physician judged would live, and the other whom the physician judged would die. To the one who would live, the physician gave orders about what to eat and what not to eat. On the other hand, the physician told the one who would die to eat whatever the patient wanted. Thus to the nations who were not destined for life in the World to Come, God said in , "Every moving thing that lives shall be food for you." But to Israel, whom God intended for life in the World to Come, God said in , "These are the living things which you may eat."