The duties of a brother are manifold and varied. He is expected to provide support, protection, and guidance to his siblings, especially younger ones. A brother should always be there for his siblings, ready to offer a listening ear, a helping hand, or a shoulder to lean on. He should be a positive role model, setting a good example for his brothers and sisters to follow. In times of trouble or crisis, a brother must stand strong and support his family, even if it means making sacrifices for their well-being. Ultimately, a brother's duty is to love and care for his siblings unconditionally, no matter what challenges may come their way.