Why was paul no longer afraid when Erik and arthur threatened him with the baseball bat?

Paul was no longer afraid when Erik and Arthur threatened him with the Baseball bat because he had come to terms with his own strength and resilience. By that point, he had realized that he could stand up for himself and no longer felt intimidated by his brother's bullying. Additionally, he understood that Erik's aggression stemmed from his own insecurities, which diminished the power of the threat against him. This newfound confidence allowed Paul to confront the situation without fear.