Mission Impossible 1 How did Ethan find the traitor?

A message about the villain was found in Jim's computer. According to the plot query of Mission Impossible 1, Ethan found the traitor in Mission Impossible 1, because Ethan found the villain's message to a man named Job in Jim's computer, and found that the Bible was brought back from the hotel where Jim mentioned staying, with Jewish marks on it, so he began to doubt Jim. Mission Impossible 1 is an action movie released in 2000, which mainly tells the story of agent Ethan Hunt and his team working together to stop the terrorist acts in Paris.