Abel is a keeper of sheep. He represents the nomadic pastoralist, unlike Cain who is the tiller of soil, so he represents more settled urban life.

亚伯是一个牧羊人，代表着不断迁徙的牧场主，而该隐是一个农夫，他代表在城市定居的人。

耶鲁公开课 - 旧约导论课程节选

That is to say the character of those who constitute a city and here he rejects a number of alternatives for what constitutes a citizen body.

也就是说那些构成城市者的特质,而在这，他拒绝了不少,替代构成公民本体的方案。

耶鲁公开课 - 政治哲学导论课程节选