Hello! In 'The Bronze Bow,' Rosh is the militant leader of the Zealots. Daniel is drawn to Rosh because he is fearless and is serious about freeing Israel from Roman occupation. However, Rosh is also a violent and bad-tempered leader who has no patience with what he terms weakness or softness on the part of his followers. When Rosh gives Daniel a mission to rob a supposedly wealthy old man, Daniel is determined not to disappoint him. However, Daniel feels a pang of guilt when the old man reminds him of his grandfather. Although he gives the old man his dagger back in order to assuage his guilt, he is still angry that he had to complete such a mission. When he throws the money bag he has stolen from the old man at Rosh's feet, Rosh is gleeful at the money in his hands.
Rosh ignores Daniel's discomfort and barks at Daniel when he demands to know why they are fighting Jews, instead of Romans. Rosh forcefully tells Daniel that if they would be successful, they can't afford to be so scrupulous about stealing from travelers, even if they are Jews. After all, the battle to drive out the Romans would require men, arms, and food. Since it takes money to afford all these necessary tools to fight the Romans, Rosh tells Daniel that he had better get used to getting the money wherever they can find it. He reasons that most of the wealthy Jews, like the old man Daniel stole from, would not have willingly parted with their money for the Zealot cause anyway. So, Rosh has no compunction at all in stealing from such Jews even if it means he has to kill them in the process. He berates Daniel for his softness, taunts him for being flawed, and tells Daniel that if he does not shape up, he will be no good to the Zealot cause.
Hope this explains things. Thanks for the question.