Cain the farmer

The thing I learned today is that Cain was the brother who offered grains ("fruit of the ground") to God, while Abel, a keeper of sheep offered the lord lamb meat. God, naturally, preferred the carnivorous food. Here is a mnemonic: Cain rhymes with grains, and "Abel" put a bell on the lamb (his name may derive from a Semitic word meaning "herdsman").