We hear the Prophet David say: “I humbled myself with fasting;“ (Ps 35:13), “I wept and chastened my soul with fasting” (Ps 69:10), and "My knees are weak through fasting.” (Ps 109:24). King David also fasted when his son was sick and “pleaded with God for the child” lying “all night on the ground” (2 Sam 12:16).
We hear that Nehemiah fasted when he heard that “The wall of Jerusalem is also broken down, and its gates are burned with fire." (Neh. 1:3,4). Thus did Ezra, the scribe and priest, fasting and calling upon the whole population to fast. (Ezra 8:2 1).
The prophetess Anna “did not depart from the temple, but served God with fastings and prayers night and day.” (Luke 2:3 7).