After his father and uncle are killed by the Romans, Daniel devotes his life to fighting the Romans. Alongside the Roman occupation of Israel, Daniel had been sold into slavery to a local blacksmith. Unable to handle being a slave any longer, Daniel runs away and joins the bandit leader Rosh, who lives in the hills and makes periodic attacks on Roman forces as well as wealthy individuals. He hasn't returned to the village because he doesn't want to return to slavery, and also because he believes that his work with Rosh is more important than his family life.
Daniel tried to imagine going back. He couldn't tell whether he would like it or not.
Simon let him think for a moment. "Don't you want to see your grandmother again, and your sister?"
Daniel did not answer. He was ashamed to say that he did not want to see them, but it was true.
(Speare, The Bronze Bow, Google Books)
This scene shows how Daniel is disconnected from emotional stability; he wants revenge so much that he is willing to abandon his family, who themselves are oppressed in the village. When Simon visits him and tells him that the blacksmith is dead, he still hesitates, since he has found purpose and a life with Rosh, and feels that he has no connection to his home anymore.