What is the importance of the mythological god, Prometheus, in the novel, Home (Robinson)?

Prometheus, in Greek Mythology, disobeyed the gods and gave fire to mankind. As a punishment the gods decreed that he would be chained to a mountain where eagles would eat out his liver while he remained alive, during the day, and then at night, he would heal. With the sunrise the process would continually repeat itself. Jack references this (an allusion) when he's discussing his life with Glory. She doesn't understand how he could relate to Prometheus. However, by the end of the novel, the reader and Glory understand. He married a woman of color during a time when it was forbidden. As a result, he can't live openly with the woman he loves and child she bore for him. He drinks excessively, which damages the liver.