How does golding subtly begin to portray jack's group as heathen in lord of the flies?

Golding subtly portrays Jack's group as the heathen by, starting with the death of Simon, showing that they base everything they do upon their own needs or desires. they show no interest in how violent they are being, or even in the needs of others. all the tribe members do what they do because of the chief, and the chief does all he does for either food, survival, or revenge on Ralph.