And Abel was a keeper of sheep, but Cain was a tiller of the ground. [Genesis 4:2]
Cain becomes a farmer. As per the rules of exile, he is following God’s commandment to work the cursed earth “by the sweat of his brow.” Abel, however, becomes a keeper of sheep; he seems to be ignoring the rules of exile and trying to relate to God in the way his father did in the Garden of Eden, where Adam was given the task to be the keeper of the animals.
The Midrash tells us something interesting about the births of Cain and Abel. Cain, we are told, was born with a twin sister; Abel, however, was born along with two sisters. [Midrash Rabbah, Genesis 22:2)
Perhaps this is the origin of the friction between Cain and Abel. Cain is the older brother, the “golden child.” The hopes and aspirations of Eve rest upon him. So why, Cain asks, did God give Abel a larger portion of sisters? After all, we should be treated equally, but if anyone were to receive a double share, it should have the first born.
This sets the stage for the rest of the Book of Genesis, where the younger brother consistently achieves superiority over the older brother who inevitably fails.
Initially Cain sets about his task, works the land and brings an offering of some fruit to God. Abel, too, offers from his flock, sacrificing the best of them.
And the Lord had respect for Abel and for his offering. But for Cain and for his offering he did not have respect. And Cain was very angry, and his countenance fell. And the Lord said to Cain, 'Why are you angry and why is your countenance fallen? If you do well, shall you not be accepted? And if you do not well, sin lies at the door. And to you shall be his desire, and yet you may rule over him. [Genesis 4:4-7]
Cain repeatedly compares himself with his brother Abel, and finds himself on the short end of the stick. In so doing, he defines himself in terms of his relationship with his brother. He judges his accomplishments by comparing them with his brother’s. When Cain sees that he has not been as successful as Abel, he becomes bitter, angry and depressed. Cain’s problem was that he assumed that he and his brother were the same and were, therefore, deserving of equal opportunities and success. This reminds us of the second day of creation when God separated between the waters. When two things are assumed to be equal, dissension follows.
And Cain talked with Abel his brother; and it came to pass, when they were in the field, that Cain rose up against Abel his brother, and slew him. [Genesis 4:8]
Again there is a lack of symmetry. Cain speaks to Abel. (We do not know what he said.) Abel does not answer. Abel is apparently not involved in this argument; it is one-sided. At this point, Cain is overwhelmed by rage and murders his brother.
And the Lord said to Cain, ‘Where is Abel your brother?’ And he said, ‘I know not; Am I my brother’s keeper?’ And He said, 'What have you done? The voice of your brother’s blood cries to me from the ground. And now you are cursed from the earth, which has opened her mouth to swallow your brother’s blood from your hand. When you till the ground, it shall not henceforth yield to you her strength; a fugitive and a wanderer shall you be in the earth. [Genesis 4:9-12]
The earth had already been cursed once – when Adam was expelled from the Garden of Eden – and now it is cursed again because it swallowed the blood of Abel. While Adam had to work the earth by the sweat of his brow and in sorrow eat of its produce, Cain, the next tiller of soil, will get nothing from it; all he can do is wander the barrenness, finding no respite.
The tragic end to the relationship between Cain and Abel unleashed the spiritual power for other arguments that will take place in the future. One such argument related in the Torah, in the Book of Numbers – between Korach and Moses – strikes us with its stunning parallels:
And they [Korach and his followers] gathered themselves together against Moses and against Aaron, and said to them, ‘You have taken too much upon yourselves, since the entire congregation are holy, every one of them, and the Lord is among them. Why then do you lift up yourselves above the congregation of the Lord?’ [Numbers 16:3]
Korach, the leader of the revolt, was a populist. He had an attractive philosophy which he conveyed to the masses. Korach claimed that all people are equally holy, therefore all people should be treated the same, with the same rights and opportunities. Of course, Korach’s argument was the same as Cain’s.
The end that God chose for the Korach rebellion is filled with irony:
The earth opened its mouth and swallowed them and their houses and all the people belonging to Korach and all of their possessions. [Numbers 16:32]
The last time – and the only other time – that the Torah used that phrasing was in reference to Abel when the earth “opened its mouth to swallow” the blood of the murdered brother. [Genesis 4:11]
The mystics, based on a tradition from the great 15th century Kabbalist Ariza’l have a very elegant explanation for these similarities – they teach that Korach was a reincarnation of the soul of Cain. [Shaar Hagiligulim Hakdama 33; also see the Shem MiShmuel in Parshat Korach]