|Parent(s)||Adam and Eve|
According to later traditions:
Abel, the younger of the two brothers, hearded animals, namely sheep and goats. Cain was a farmer who spent his days sowing and reaping the land that his younger brother's animals would graze from.
When Cain presented to God his sacrifice, produce from his crops, God was pleased with Cain. However when the shepherd, Abel presented his blood sacrifice of living animals, God was more pleased with him than Cain. The older brother took great offense to this, leaving his mind vulnerable to The Devil's poisonous reasonings. He slew his brother in cold blood.
And so goes the story of Abel's short lived life.