Bhikkhus and bhikkhunis are expected to fulfill a variety of roles in the Buddhist community. First and foremost, they are expected to preserve the doctrine and discipline now known as Buddhism. They are also expected to provide a living example for the laity, and to serve as a "field of merit" for lay followers—providing laymen and women with the opportunity to earn merit by giving gifts and support to the bhikkhus. In return for the support of the laity, bhikkhus and bhikkhunis are expected to live an austere life focused on the study of Buddhist doctrine, the practice of meditation, and the observance of good moral character.