Moreover, when ye fast be not as the hypocrites, of a sad countenance, for they disfigure their faces that they may appear unto men to fast. Verily I say unto you, they have their reward. But thou, when thou fastest, anoint thy head, and wash thy face; That thou appear not unto men to fast, but unto thy Father, who is in secret; and thy Father, who seeth in secret, shall reward thee openly (3 Nephi 13:16-18).
