Rappers are like jobs to me (why?) because they get done
Here it comes I'm as Able as Cain to get raw

from Common – Thisisme Lyrics on Rap Genius

Meaning

Job, Abel, and Cain are biblical figures (Job gets “done” by God). Cain — Big Daddy Kane, whose 1987 single “Raw” (itself a play on Kane as cocaine) put him on the map.

Kane also had a mainstream single, “I Get the Job Done,” showing how Common can weave a line together.
http://www.youtube.com/watch?v=2OKNDb1ONL4

To help improve the meaning of these lyrics, visit “Thisisme” by Common Lyrics and leave a comment on the lyrics box